The crash had spilled a noxious defoliant into the planet's ecology, ravaging the native flora.这次坠毁将一种有害的落叶剂洒入星球的生态系统中, 破坏着当地的植物群....a senior lecturer in ecology.生态学高级讲师To keep ecology in balance is our duty.保持生态平衡是...
To keep ecology in balance is our duty.保持生态平衡是我们的职责.Development has been guided by a concern for the ecology of the area.该地区的发展以注重生态为指导原则。We are reproducing ourselves at such a rate that our numbers threaten the ecology ...
他们因吸入大量烟尘被送往医院。They were taken to hospital suffering from smoke inhalation.他们的制服破破烂烂的，沾满了烟尘。Their uniforms are torn and sooty.烟尘在空中浮荡.The air resounded with smoke and dust....
He always skips from one subject to another.他讲话总是喜欢东拉西扯.In reading a novel, he generally skips over all the long descriptive passages.阅读小说时, 他总是把那些冗长的描写统统跳过去不看.Every time I ask Bill to do a job for me, he skips off and p...