The light source must therefore be immensely brighter if it is to be used as a headlight to illuminate the path, than if it is to be used as a signal to others.

与用作被人识别的信号相比，如果用作照亮路途的头灯的话，光源必须要明亮很多。

youdao

The legend in each chart clearly shows which Y axis is to be used.

每个图表上的图例都清楚地显示了将使用哪个 Y 轴。

youdao

This step is purely optional and is to be used for testing purposes only.

该步骤纯粹是可选的，并且将仅用于测试目的。

youdao

The money is to be used to expand small irrigation projects to the other half of India's twenty-eight states.

VOA: special.2009.08.17

Didn't create a new list. The old l is still there but it's different than it used to be.

它改变了数组，而并没有新建一个数组,老数组l依旧存在。

麻省理工公开课 - 计算机科学及编程导论课程节选

work is going from where it used to be 5 or 6 big companies in California, in San Francisco and LA.

过去的工作是由加州、旧金山和洛杉矶的五六个大公司来做，

经济危机和电影市场 - SpeakingMax英语口语达人

Details of how the cash is to be used will be disclosed at a later date.

BBC: Child poverty figures challenged

Air power is to be used only when there is no significant risk of civilian deaths.

ECONOMIST: Afghanistan

The land is to be used for parks, sports grounds, old people's homes and other public facilities.

ECONOMIST: Japanese property