除非这些条件得到满足，否则我们不能进行这项交易。

Until these conditions are met we cannot proceed with the sale.

《牛津词典》

除非这些问题得以解决，否则该地区会一直是个火药桶。

Unless these questions are solved, the region will remain a powder keg.

《柯林斯英汉双解大词典》

除非这些计划能得到政策制定者的更多支持，否则不会有成果。

These plans will not bear fruit unless they get considerably more support from policy-makers.

youdao

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 will be happy to admit that I read through this I probably cannot tell you what it did unless I really obsessed over these details.

我不得不承认，恐怕我读完后,也不能告诉你它都干了些什么,除非我完完全全被这些细节给迷住了。

哈佛公开课 - 计算机科学课程节选

So you couldn't die unless you were engaged in certain activities.

所以你不可能死,除非你参与了这些活动。

耶鲁公开课 - 死亡课程节选