Dropping the index is deferred until no user is using the index.

索引的删除延迟到没有用户使用该索引的时候。

youdao

Lions still occasionally prowl nearby, but their Numbers are dropping. There are no elephants any more.

我们偶尔还可以看到一些在附近闲逛的狮子群，但它们的数量却减少了，而象群是再也看不到了。

youdao

TechCrunch was affected, dropping from no. 2 to no. 3 behind Gizmodo (our France, UK and Japan blogs are on subdomains).

而在此前，他们甚至不挨着。techcrunch受到影响，从第二位下滑至第三位，落后于gizmodo (techcrunch的法国，英国和日本的博客都是在子域名之下)。

youdao

"That's no excuse for talking back to your teacher, or cutting class or dropping out of school.

VOA: special.2009.09.10

There's no dropping of lowest scores from the average.

并没有去掉最低分的情况。

麻省理工公开课 - 固态化学导论课程节选

That's no excuse for talking back to your teacher or cutting class or dropping out of school.

VOA: standard.2009.09.08

That may help: no more dropping sports in order to squeeze in extra drill on exam technique.

ECONOMIST: School examinations

This contrasts with almost no students dropping out of courses at St George's Medical School, Cambridge, and the London School of Economics.

BBC: State school pupils Oxbridge majority

The former IBF Cruiserweight Champion said he has no interest in dropping back down to that weight class.

WSJ: Tyson Fury stops Steve Cunningham to win US debut