我们不希望每次都从数据库检索列表，所以我们希望将这些信息保存在某个地方一直到需要时。

We didn't want to retrieve the list from the database each time, so we wanted to save this information somewhere until needed.

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因此，每次只有一个存储区域是活动的，其他存储区域不活动。

Therefore, only one storage area is active at a time and the remaining ones are inactive.

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每次传播之间不写入分隔符。

No delimiters are written between each propagation.

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We don't know what it's like to be dead, because every time we try to imagine it, we fail.

我们不知道死亡是什么样的，因为每次我们想象死亡，都无果而终。

耶鲁公开课 - 死亡课程节选

First of all, it will only be a minute or two at a time, maybe once or twice a lecture.

首先，每次只有一两分钟，一堂课最多不超过两次。

哈佛公开课 - 幸福课课程节选

But it turns out that because the Standard I/O Library is -lstdio so common they don't force people to type this all day long because it's just so commonly used.

由于大家都会用到标准输入输出库,因此我们不要求每次都在后面添上,可以省略。

哈佛公开课 - 计算机科学课程节选