他决定为在澳大利亚西部人为导致荒芜的土地上重新造林做点事情。He decided to do something about reforesting man-made wastes of western Australia.其中一位新闻记者询问是否有人为破坏的可能性。One of the journalists queried whether sabotage could have been involved.许多人为防失业都干两份工作...
Sedimentation and denudation play a role in exceptional cases.沉积和剥蚀作用的影响只在特殊情况下起作用.Hitchhiking effects also play a role in experiments with marker genes.附加效应在以标记基因作试验中也是起作用的.Co - ordinated action on taxation will have to...