在理论上，买方可以要求卖方进行一次产品检测。

In theory, the buyer could ask the seller to have a test carried out.

《柯林斯英汉双解大词典》

那些一次预订大量座位的人可以享受折扣价。

Those booking a block of seats get them at reduced rates.

《柯林斯英汉双解大词典》

房子只需偶尔粉刷一次就可以保持其良好状态。

The house only needs an occasional coat of paint to keep it shipshape.

《柯林斯英汉双解大词典》

At that stage we can merge these, and then take this down, do the division merge and bring them back up.

在那里做一次分解，做到这步时，我们可以把这些进行合并，然后把这个拿下来,做分解合并过程后再把它们拿回去。

麻省理工公开课 - 计算机科学及编程导论课程节选

And there are very few people that you can sit down and speak to for, like, eight hours at a time.

很少有人你可以坐在一起,一次就能聊天聊8个小时。

普林斯顿公开课 - 人性课程节选

What's the point of this? Again, now that I can think about things recursively, I can similarly break things down into simpler versions of the same problem. It could be one version.

这些的意思是什么呢？再一次我想说,我既然能够以递归的方式思考了,那么我就可以简单地把问题,转化为更简单的同类问题。

麻省理工公开课 - 计算机科学及编程导论课程节选