Dave and Michelle invited me to go out with them but I don’t want to play gooseberry all evening.戴夫和米歇尔邀请我跟他们一起出去,不过我可不想整个晚上都当电灯泡。Dave and Michelle invited me to go out with them but I don't want to play gooseberry ...
Mankind's knowledge of the universe has increased beyond measure.人类对于宇宙的了解已经大为增加。His research is for the betterment of mankind.他的研究是为全人类造福。the history of mankind人类的历史...