专性寄生物
zhuān xìnɡ jì shēnɡ wù
- 名Obligate parasite;obligatory parasite
专性寄生物-
由于所谓的专性寄生物完全依赖宿主细胞复制它们极小的基因组及合成蛋白，因此新产生的病毒或病毒粒子必须找到新宿主，否则它们就会迅速崩溃，特别是暴露在太阳、空气或盐中的时候。
As so-called obligate parasites entirely dependent on host cells to replicate their tiny genomes and fabricate their protein packages newborn viruses , or virions , must find their way to fresh hosts or they will quickly fall apart , especially when exposed to sun , air or salt .
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为广寄主性的植物根系专性内寄生物，是当前威胁中国农业生产最重要的病原物类群之一。
Are polyphagous obligate endoparasites of plant roots . These nematodes currently constitute one of the most economically important groups of pathogens of agricultural crops in China .
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病毒是专性的细胞内寄生物。
Viruses are obligate intracellular parasites .