查人人中国名人网青金石戴久了会变色吗:Once environmental damage __,it takes many years for the system to recover
来源：百度文库 编辑：查人人中国名人网 时间：2024/05/05 14:28:08
A has done B is to do C does D is done 大家帮个忙啊,小女子有理了,这句话什么意思 啊\
D is done
如果环境贝破坏，就会化肥很多年回复这个环境系统
was done
从句是一般现在时,主句应用过去时
完成时是要用的
D
一旦环境被破坏,生态系统要花好多年去恢复.
选D啊, 楼上翻译非常好！
楼上很对
Once environmental damage __,it takes many years for the system to recover
If I were you ,I'd leave at once
TOPIC:About environmental protection
environmental scanning 如何翻译？
1.You'd better go to school at once.(否定句)
once是什么意思？
Just Once
broader environmental forces怎么翻译比较好？
请问怎么投稿给environmental geology 期刊？
谁知道关于environmental issue的相关资料