Leave the gas on at the main valve, unless you smell gas or think it \ 's leaking.
除非闻到煤气味或认为煤气正在泄漏，不用关掉煤气阀门。
"Unless it 's. a potluck, where everyone brings a_dish, the host will probably respond," No, just yourself. "for most informal dinners, you should wear comfortable, casual clothes."
除非是每人带道菜的聚餐，否则主人很可能会回答：不用，你来就可以了。大多数非正式的聚餐，你应该穿舒适、轻便的衣服。
Unless you receive instructions from us to the contrary, you are not required to advise amendment (s) (if any) to the Second Beneficiary.
除非贵行收到我司的相反指示，贵行不需将信用证修改(如有)通知第二受益人。
Unless you that 's not a good high school, otherwise you won't catch up!
除非你上那个忒不好的高中，要不然你就跟不上！
Likely it"s not, unless you have the tribal knowledge about this API. Even a search of MSDN documentation would end in frustration."
如果不是的话，除非关于这个API有一个部落知识库，否则即使通过MSDN可以搜索得到也是非常失败的。
Unless somebody comes up with a way to force you to watch them, who "s going to pay for them?"
除非有人想出了强迫人们看电视广告的方法，否则谁会买它的账呢？
Unless somebody comes up with a way to force you to watch them, who "s going to pay for them?"
除非有人想出了强迫人们看电视广告的方法，否则谁会买它的账呢？
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