Several other herbicides, including amitrole, barban, dicamba, and mcpa, alter aphid populations on treated hosts plants . 另一些除草剂，包括杀草强、燕麦灵、麦草畏和MCPA，都能够改变处理寄主上的蚜虫群体。
Chapters 2－5 are devoted to the basic concepts of mendelian and population genetics which are of greatest concern in tree improvement . 第二到第五章介绍对于改良树木有密切关系的门德尔和群体遗传学的基本概念。
In addition , it can suggest a community of people who share a history and language but may not have their own country or state . 此外，这个词还可指某些群体，虽然有共同的历史和语言，却可能没有自己的国家或政权。
Feud may be said to exist where the principle of blood-debt between groups is the expected response to homicide . 可以说，世仇存在于这样一些地方，在那儿，根据群体间的血债偿还原则，人们可以通过杀人来偿还杀人的血债。
What are the native qualities and characteristics upon which the moral or immoral character accepted and conventionalized by the group are based ? 已经被群体公认的并因袭的那些道德的与不道德的本性，各出自哪几种先天的素质？
Specific people it ' s not the entire community 特定的几个人并不能代表整个群体。
The legal protection of the weak and ruling by law 弱势群体的法律保护与法治精神
Prevention of group cases of attacking the railway 冲击铁路群体性治安事件的预防
The affected colonies died in about 3 months 这些受到感染的群体会在3个月死亡。
