By knowing the store policy, the haggler knows when to return to check the price of something they already bought.

弄清减价规律，砍家就知道什么时候去查证他们已购物品的价格。

youdao

When winter comes, they return to the hiding places to eat the food.

冬天来临时，它们便会回到藏身处进食。

youdao

Anytime you go into the woods, somebody should know where you are going, and when you expect to return.

当你计划去森林的时候，应该提前告知其他人你要去哪里，什么时候回来。

youdao

Roosevelt was in good spirits when he reported to Congress after his return from the Yalta conference.

VOA: special.2011.07.07

I find it again in the Christian tradition, when we do the... in Lent, like "You're from dust and to dust you will return."

在基督教传统中我发现，大斋节的传统,如“尘归尘土归土“之类“

普林斯顿公开课 - 人性课程节选

In other words it doesn't just return when it finds one, it's going to run through all of them. All right?

但是它将会继续运行,换句话来说当它找到一个结果时,它不会立刻返回结果它会先遍历所有的内容？

麻省理工公开课 - 计算机科学及编程导论课程节选

In making any significant changes to a portfolio you need to decide when to act, where to go, and when to return.

FORBES: Winning At The Great Head Game Of Investing

"Once modifications are completed on individual airplanes, our customers will determine, with their regulatory authorities, when to return their 787s to service, " said Birtel.

CNN: Dreamliners inching toward the runway

The marches are timed to when Congressmen return to Washington, even though many consider the House and Senate to be hopelessly deadlocked over immigration legislation.

NPR: Immigrant Marches Planned for Labor Day Weekend