By default, if a connection is put back in the free pool and not used again for at least 30 minutes, it is closed, provided that closing it will leave at least one connection in the free pool.

在缺省情况下，如果连接放回空闲池中并且至少30分钟没有再使用它，并且关闭该连接后，空闲池中至少还保留一个连接，则将关闭该连接。

youdao

Although it may seem logical, this has an important effect: If a database connection is closed for some reason, any database objects that it contains are also closed.

虽然这看上去合乎逻辑，但是存在一个重要影响：如果由于某种原因关闭了数据库连接，那么也将关闭该数据库包含的所有数据库对象。

youdao

What it says is if s is a closed surface — Remember, it is the same as with Green's theorem, we need to have something that is completely enclosed.

它说的是，如果s是一个封闭曲面，这和格林定理是一样的，我们需要完全封闭的。

youdao

Let's see if it recognizes, try voting--polling closed--not so good.

我们试试它能不能识别,投票,结束,不太好

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

An unemployed former marine who uses the food bank said it would be "devastating" if it closed.

BBC: Grantham food bank 'needs ?20,000 a year to survive'

He also called on Economy Minister Ieuan Wyn Jones to help Merthyr "get some value out of the site" if it closed.

BBC: Workers march over factory threat

It was only as lifespan was increased that the disparity started to appear -- maybe it could closed again if we poured some research and effort into it.

WSJ: Guys Left Behind