constant
- n.常数;常量
- adj.恒定的;不断的;不变的;固定的;重复的;连续发生的
复数： constants
con- 共同,一起 + st- 站,立 + -ant ...的
constantadj.
连续发生的；不断的；重复的
happening all the time or repeatedly
constant interruptions
无休止的干扰
a constant stream of visitors all day
整天络绎不绝的游客
Babies need constant attention.
婴儿一刻也离不开人。
This entrance is in constant use.
此入口经常使用。
不变的；固定的；恒定的
that does not change
travelling at a constant speed of 50 m.p.h.
以每小时50英里的恒定速度行驶
constant
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1
ADJ 持续不断的;重复的;一直存在的
You use constant to describe something that happens all the time or is always there.She suggests that women are under constant pressure to be abnormally thin...
她暗示说女性总是处在保持身材异常瘦削的压力之下。
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The direction of the wind is constantly changing...
风向不断变化。
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3
ADJ-GRADED 恒定的;不变的
If an amount or level is constant, it stays the same over a particular period of time.The average speed of the winds remained constant.
平均风速保持稳定。
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4
N-COUNT 恒定物;常数；常量；常项
A constant is a thing or value that always stays the same.In the world of fashion it sometimes seems that the only constant is ceaseless change...
在时装界，有时似乎唯一永恒不变的东西就是不断的变化。
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5
constant, continual 和 continuous 均可用来描述不断发生或一直存在的事物。constant 表示一直在发生或从未消失：He was in constant pain (他的疼痛一直没有消停)，Eva's constant criticism (伊娃没完没了的批评)。continual 通常用来形容一段时期内经常发生的事，尤其是令人讨厌的事：his continual drinking (他经常饮酒)，continual demands to cut costs (不断要求削减成本)。continuous 表示一直没有间断，或者貌似如此：days of continuous rain (淫雨霏霏的日子)，a continuous background noise (持续不断的背景噪音)。
Y
noun
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1
- a quantity that does not vary
- Synonym: constant quantity invariable
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2
- a number representing a quantity assumed to have a fixed value in a specified mathematical context
- the velocity of light is a constant
adj
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1
- steadfast in purpose or devotion or affection
- a man constant in adherence to his ideals
- a constant lover
- constant as the northern star
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2
- uninterrupted in time and indefinitely long continuing
- the ceaseless thunder of surf
- in constant pain
- night and day we live with the incessant noise of the city
- the never-ending search for happiness
- the perpetual struggle to maintain standards in a democracy
- man's unceasing warfare with drought and isolation
- unremitting demands of hunger
- Synonym: ceaseless incessant never-ending perpetual unceasing unremitting
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3
- unvarying in nature
- maintained a constant temperature
- principles of unvarying validity
- Synonym: changeless invariant unvarying
数据来源：WordNet
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The speed of light is an invariant constant .
光速是一个不变常数。
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The speed of light is an important constant .
光速是一个重要的常数。
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The temperature remained constant while pressure was a variable in the experiment .
做这实验时温度保持不变，但压力可变。
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The building work is creating constant noise , dust and disturbance .
建筑施工不断制造噪音、灰尘和干扰。
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The stones have been worn smooth by the constant flow of water .
不停的流水把这些石头冲刷得很光滑。
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This entrance is in constant use .
此入口经常使用。
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We lived in constant fear of losing our jobs .
我们一直生活在担心失去工作的阴影里。
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The constant presence of the media was very intrusive .
媒体一直在场十分令人讨厌。
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In the end , I just got fed up with his constant complaining .
他不停地发牢骚，终于使我厌烦了。
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The police are keeping the suspects under constant surveillance .
警方正对嫌疑人实施不间断监视。
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Babies need constant attention .
婴儿一刻也离不开人。
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At the other end of the scale , life is a constant struggle to get enough to eat .
对于处在社会最底层的人来说，生活就是为吃饱肚子而不断挣扎的过程。
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The threat of losing their jobs is a constant source of worry to them .
丢掉工作的威胁时常使他们忧心忡忡。
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The constant winds had stunted the growth of plants and bushes .
老是刮风，花草、灌木长不大。
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She stressed the need for constant vigilance .
她强调必须时常保持警惕。
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Constant streams of traffic flowed past .
车流不断通过。
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His constant moaning was beginning to jar on her nerves .
他不停的呻吟使她焦躁不安起来。
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Jane 's constant chatter was beginning to annoy him .
简无休止的唠叨开始使他心烦。
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The newspapers took constant potshots at the president .
报界经常胡乱批评总统。
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Constant rejections made him feel worthless .
不断地遭到拒绝使他觉得一无是处。
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The sheer size of the cathedral is a constant reminder of the power of religion .
大教堂的宏大规模使人时刻领略到宗教的威严。
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Her constant nagging drove him away .
她不断的唠叨把他给赶跑了。
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Constant criticism is enough to demoralize anybody .
频繁的批评足以使任何人意志消沉。
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travelling at a constant speed of 50 m.p.h.
以每小时50英里的恒定速度行驶
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His constant complaints were straining our patience .
他没完没了的抱怨让我们忍无可忍。
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Two significant constants have been found in a number of research studies .
若干研究已经发现了两个重要常量。
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The dynamic of the market demands constant change and adjustment
市场要有活力，需要不断地改变和调整。
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He has been her constant companion for the last four months .
4个月来，他一直陪伴在她身边。
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We conceive of the family as being in a constant state of change
我们认为家庭处于不断变化之中。
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He would have a nurse in constant attendance day and night .
会有一位护士日夜不间断地陪护着他。