[] to not be successful in achieving sth失败；未能（做到）◆Their marketing strategy failed to increase sales.他们的营销策略未能增加销售额。◆They failed in their bid to buy the company.他们意欲收购这家公司的行动失败了。◆So far, negotiations have failed.到目前为止，谈判未果。 [] to not do sth未做；未履行（某事）◆She failed to keep the appointment.她未能赴约。◆They claim that the government has failed in its duties.他们声称政府失职。 [] (about a business) to be unable to continue（企业）破产，倒闭◆Statistics show that 80% of businesses fail within the first five years.统计显示有 80% 的企业在开业五年之内倒闭。◆a failing company一家濒临倒闭的公司 [] (about a machine or system) to stop working（机器或系统）出故障，失灵◆The idea is that if one part of the system fails, the others continue to run.这个构思是，如果系统的某部分出故障，其他部分也能继续运行。 [] to not pass a test or an exam; to decide that sb/sth has not passed a test or an exam（测验或考试）不及格；评定不及格◆She failed her professional exams.她专业考试不及格。◆190 units failed inspection last month.上个月有 190 件产品检验不合格。OPPpass