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.

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。

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Constructed around a fable involving an alien spaceship which hailed a group of hackers and touched down for repairs to their damaged computers, the camp featured a sculpted spaceship and a "landing area" illuminated by ghostly neon pillars.

CNN: Reporter's notebook: Hackers on holiday

Mr Dlamini, blessed with a dogged determination, support from senior people inside and outside the group, and an ability to adapt to alien environments, stayed the course.

ECONOMIST: Face value