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.
该类害虫在入侵时以及入侵后在种群生物学和行为遗传学上发生了一系列的变异，使其成为一种入侵成功的外来生物。
The genetic changes during or subsequent to introduction have led to alterations in its population biology and behavioral genetics; these, in turn, have promoted the invasive success of RIFA.
该类害虫在入侵时以及入侵后在种群生物学和行为遗传学上发生了一系列的变异，使其成为一种入侵成功的外来生物。
The genetic changes during or subsequent to introduction have led to alterations in its population biology and behavioral genetics; these, in turn, have promoted the invasive success of RIFA.
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