双杀：用一次投球使二人同时出局。

Double kill: A play in which two outs are made with one pitch.

youdao

请问你多久用一次微信付款呢？

May I know how often you use WeChat to pay?

youdao

用一次就扔进填埋场了。

You use them once and then they get tossed in a landfill.

youdao

You can actually initialize multiple things at once by separating them with a comma, and this is sometimes helpful.

你可以一次性初始化很多东西,通过用逗号分开它们，这有时是有用的。

哈佛公开课 - 计算机科学课程节选

- Well, just a moment ago, we did have -- -- and this time I'll use some chalk here -- a moment ago, we did have a picture depicting what was going on when you call the function.

好的，刚才，我们确实有-,这一次我将用一些粉笔-,刚才，我们有一张图描绘了当我们调用函数的时候,会发生什么事情。

哈佛公开课 - 计算机科学课程节选

There was an intellectual leap that occurred in the seventeenth century and it became very fashionable to talk in terms of probabilities.

也就是说,十七世纪中,诞生了一次智慧的飞跃,用概率来表述成了件很时髦的事

耶鲁公开课 - 金融市场课程节选