keep back 留下;隐瞒;阻止; 例句 She was unable to keep back her tears. 她无法忍住泪水。 Keep back straight and bend knees. 背要直,只弯两膝。 ...
常见的40个不及物动词 answer for回答; apologize for为.道歉; suffer for为苦; pay for为)付钱; look for寻找; make up for偿; stand for代表; comp...
水利万物而不争,
而万物莫能与之争。