Drop, cover, and hold — Take cover under a sturdy desk, table, or bench, or against an inside wall, and hold on.

蹲下，寻找掩护，抓牢——利用写字台、桌子或者长凳下的空间，或者身子紧贴内部承重墙作为掩护，然后双手抓牢固定物体。

youdao

A book drop is the small metal door in the wall of the building where people can return books when the library is closed.

所谓还书架(book drop)是指，当图书馆关门时，还书者将书放在墙中的一个金属门中，这个金属门就是还书架。

youdao

The best comment on the system is this illiterate message recently scrawled on a wall： ”I were a teenage drop-out and now I are a teenage millionaire.

对考试制度最好的评论是乱涂在墙上的这则没受过教育的一句话：”我曾是一个十几岁的辍学者，而现在我是一个十几岁的百万富翁。

youdao

A book drop is the small metal door in the wall of the building where people can return books when the library is closed.

VOA: special.2009.02.23

Though the worst reading in seven years, it is better than the 0.5% drop Wall Street had been expecting.

FORBES: Magazine Article

New orders for U.S. durable goods slipped 0.8% in March, far less than the 1.5% drop Wall Street had expected.

FORBES: Markets Brief

Separately, the National Associaton of Realtors said November pending home sales fell 4.0%, well below the 1.0% drop Wall Street had predicted, according to TradeTheNews.com.

FORBES: Market Scan