布瓦尔木花，菊花和非洲菊也可以持续比较长的时间。
Bouvardias , Chrysanthemums , and Gerbera daisies are also long-lasting .
然而，布瓦尔克本人也对用法律、而非更具体的措施来保障幸福的有效性表示怀疑。
Yet , the senator himself cast doubt on the effectiveness of guaranteeing happiness by law rather than by more concrete measures .
布瓦尔