Western Europeans had also developed and put into use the magnetic compass, which helped when clouds obliterated both the Sun and the stars.

西欧人也已经发明并且使用了磁罗盘，当云彩同时遮住了太阳和星星时，它就能起作用。

youdao

The great mathematician never saw his calendar put into use.

这位伟大的数学家从未看到他的日历投入使用。

youdao

Quite a few new laws and rules on food safety were put into use last month.

上个月，不少关于食品安全的新法律法规开始生效。

youdao

Ms. McCLANAHAN: Well, the safest thing, especially for short-term money, is to put into CDs - and I would just use short-term CDs right now interest rates being so low - you could use money market funds, money market mutual funds.

NPR: How to Weather a Rocky Economy

The free-shipping program is meant to put more coins into day-to-day use.

WSJ: U.S. Helps Frequent Fliers Make a Mint

Each year employers and consumers can put money into individual accounts, tax-free, that workers can then use for medical expenses.

FORBES: Fact and Comment