外来入侵植物的入侵要经历一个从个体到种群的过程，只有形成种群后才能对自然生态环境造成危害。
The invading of an alien plant is an individual-to-group process. The invasion will not do harm to the ecology until the plants become a group.
研究人员发现了大约1000个种群，而且从个体到个体间分布一致；原来人们的鼻子里、背上都住的房客都大同小异。
The researchers found about 1000 species total, which were fairly consistent from person to person; it turns out we all have similar tenants in our noses and on our backs.
研究人员发现了大约1000个种群，而且从个体到个体间分布一致；
The researchers found about 1000 species total, which were fairly consistent from person to person;
应用推荐