比方说，某餐馆出售的抵用券只能在星期二使用，这样就能使原本生意冷清的周二晚上爆满。

For example, a restaurant might sell vouchers that are redeemable only on Tuesdays, thus filling tables on a quiet night.

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星期二使用级别 2，由于星期一处于相同的级别，所以 RMAN 将备份星期一以后的更改。

Tuesday uses level 2 and since Monday is at same level, RMAN will back up changes since Monday.

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第二，我们可以永远使用风能。

Second, we can use wind power forever.

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When Darius II died, who was the king of the Persians, Alexander himself took on Darius's title, which was Great King.

波斯国王大流士二世死后，亚历山大使用了大流士的头衔，也就是“大帝“

耶鲁公开课 - 新约课程节选

Sometimes there were interesting little problems that emerged and one of those has to do with the use of chariots in warfare.

偶尔会有一些有趣的小问题出现,这往往和战争时使用的二轮战车相关

耶鲁公开课 - 古希腊历史简介课程节选