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1·Some new technologies are being put to use.

一些新技术正在投入使用。

2·In 1920, the world's first three-color traffic light was put to use.

1920年，世界上第一个三色交通灯投入使用。

3·China's Panda Train from Chengdu to Zunyi was put to use on March 28, 202l.

从成都到遵义的中国“熊猫专列”于2021年3月28日投入使用。

4·A row of reflective boards on a nearby mountainside were put to use.

附近的山坡上，一排反光板被派上用场。

5·If the new safety system had been put to use, the accident would never have happened.

如果采用了新的安全系统，事故就不会发生了。

6·The sequence has already been put to use.

这个序列已经付诸使用。

7·Here's how a college library is really put to use.

实际上，图书馆是这样使用滴。

8·It is only when the browser loads the HTML document that the CSS is put to use.

仅当浏览器装入HTML文档时，才会使用CSS。

9·And it can immediately be put to use in a way that traditional firms cannot match.

而且这些数据能够被很快地以一种其他传统公司无法企及的方式投入使用。

10·More than half of America's states have similar laws, and they are being put to use.

美国将近半数的州都制定了类似法律，并现行使用。