why
何必多此一举。
Why bother?
你何必自寻烦恼。
Why look for trouble?
你何必瞒着我
why keep it from me?
早知今日，何必当初
if you had known what was going to happen, you would never have started
汉译英翻译词典收录86165条汉英翻译词条，基本涵盖了全部常用中文字词的英语拼写、翻译、音标、读音、用法、例句等，是英语学习的有利工具。