翻译;毫无疑问,人类的行为引发了温室效应(There is no doubt that)
问题描述：
翻译;毫无疑问,人类的行为引发了温室效应(There is no doubt that)
答
There is no doubt that it's human's behavior that cause the greenhouse 。
答
There is no doubt that humen's behavior cause the Greenhouse Effect.
答
There is no doubt that the global warming was caused by human beings.