fail in的近义词

fail 和fail in的用法区别和意思 fail 与fail in的用法是一样吗 fail和fail in用法 fail的几种用法fail in sthfail in doing sthfail to do sthfail sth fail to do sth和fail in doing sth的区别 fail和fail in 有什么区别? fail in the exam fail the exam区别 fail sth.和fail in sth.有什么区别? fail in sth..fail to do sth.啥意思? 是fail the test 还是fail in the test? Fail in plan, is planning to fail什么意思? fail,failure的区别