Most of us need to lead more balanced lives to be healthy and happy...我们中大多数人需要过更为平衡的生活，以保持健康和快乐。The motion of the rotor can be balanced completely with rotating counterweights attached to the crankshaft.使用连接在曲轴上的转动平衡块,转...
It'stood crouched, with tail between its legs, like a miserable and woe - begone dog.它夹着尾巴蹲在那儿, 好像一条可怜的倒楣的狗.To feel, or feign, decorous woe.感到或装作适当的悲伤.Kinsman helps kinsman,but woe to him that hath nothing.亲人帮亲人,无亲愁...