amain的音标：amain的英式发音音标为：[ə'meɪn]amain的美式发音音标为：[ə'meɪn]...

remainders的音标：...

This principle of collective bargaining has been a mainstay in labor relations in this country.这一集体谈判原则已经成为该国劳动关系的重要基础。He thinks he's a mainstay of the company, but he's really rather small beer.他自以为是公司的台柱, 但事实...