The ruin of large number of rainforest plants must destroy the ecological balance.
大量热带雨林的植物的毁灭必然破坏生态平衡。
In the same time destroy the ecological balance of human, is the edge of their own to death.
人类在破坏生态平衡的同时，正在把自己推向死亡的边缘。
The automotive exhaust emission will do harm to people's health and destroy the ecological balance.
机动车尾气排放不仅危害人们身体健康，同时也破坏了生态环境。
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