fail 1.不及格 a fail in math 数学不及格 vi.1.失败 Our plan has failed.我们的计划失败了.He failed in everything he tried.他做一切事情都失败了.2.不及格 She failed in the examination.她这次考试不及格.3....谢谢了。不谢，祝你学习进步！谢了。