1.China alone unable to save world.
单凭中国不能拯救世界。
2.He mused: Did British leader Gordon Brown just save world markets?
他提出了思考:英国首相布朗是否拯救了世界市场?
3.Maybe he can't go to Harvard and save world because of that, but he saved my vacation anyway.
也许因此他无法进哈佛然后拯救世界,但是他拯救了我的假期。