I won't tell them—not unless you say I can.

我绝不告诉他们—除非你允许。

《牛津词典》

He hasn't got any hobbies—unless you call watching TV a hobby.

他没有什么爱好—除非你把看电视也称作爱好。

《牛津词典》

You won't get paid for time off unless you have a doctor's note.

除非你有医生证明，否则你不上班便拿不到工资。

《牛津词典》

said Ransie. "Unless you're in such a hurry to get away that you don't want me to say it."

VOA: special.2009.11.14

And these texts almost defy interpretation by a modern person, unless you have guidance from a historian and expert like moi.

这些文本几乎无法由现代人翻译，除非由历史学家或专家指导，比如我。

耶鲁公开课 - 新约课程节选

I mean, like, unless you, you're like, acquainted with the city, then, like, you can find stuff,

我的意思是，只有当你对这个城市非常熟悉，你才能发现它的好玩之处。

纽约和洛杉矶不一样 - SpeakingMax英语口语达人

Getting such a loan, for one, is tough unless you have considerable equity in your home.

FORBES: Parents' Tough Choices For Repaying Student Loans

You're not happy unless you've got your TiVo or your MCE (Microsoft Media Center Edition).

ENGADGET: blogger-avatar

PCBs are actually not carcinogenic unless you repeatedly overdose a laboratory mouse with them.

FORBES: Fact and Comment