The game had a single inviolable rule: obstacles were to be overcome, not circumvented.

这个游戏有一个单一的不可违反的规则：困难是被克服的，不是被回避的。

《柯林斯英汉双解大词典》

Small businesses are well situated to benefit from the single market.

小企业所处的形势有利于从单一市场中受益。

《牛津词典》

The drachma disappeared, replaced by the euro when Greece joined the single European currency.

自希腊加入欧洲单一货币体系后，旧的希腊货币系统消失了，取而代之的是欧元。

《柯林斯英汉双解大词典》

It doesn't, in other words, derive from an antecedent single cause as an effect.

换句话说，它不是，作为结果来自单一的先行的原因。

耶鲁公开课 - 文学理论导论课程节选

to the... -Em... I'm not aware of any sort of...arguments with the say that it's a single economic zone.

成为。。。，-嗯。,我没听过有人反对,这样一个单一经济区的存在。

普林斯顿公开课 - 国际座谈会课程节选

So the system will not be described by a single state variable during the path.

因此系统将不能被,路径上的单一状态变量描述。

麻省理工公开课 - 热力学与动力学课程节选