fail的名词是failure;failuren.失败;失败的人(或事物);未做，未履行…

1、名词；fail；n. (考试) 不及格; 例句：He got a fail in…

名词:failure。failure，主要用作为名词，意为失败；故障；失败者；…

相关介绍：例句：The marriage was a failure and they both…

相关介绍：failure例句You have to have success and failure…