/ənˈles ||; ənˈlɛs/conj if... not; except if 如果不;除非:
I was told that unless my work improved, I would lose the job.我被告知,除非我工作表现有改善,否则将会被解雇。‘Would you like a cup of coffee?’ ‘Not unless you've already made some.’“你要喝杯咖啡吗?”“不了,除非你已经煮了一些。”Unless anyone has anything else to say, the meeting is closed.如果大家没有其他意见发表,会议到此结束。Don't switch that on unless I'm here.除非我在这里,否则不要开这个开关。