不打不成交 No discord , no concord
不到长城非好汉 He who has never been to the Great Wall is not a ture man .
不到黄河不死心 refuse to give up until all hope is gone
不登大雅之堂 not appeal to refined taste
不费吹灰之力 as easy as blowing off dust
（责任编辑：张梦璇）
（责任编辑:admin）
