He helped me when I need it most.

在我最需要帮助的时候他帮助了我。

youdao

Thanks for holding my hand when I need it.

谢谢您在我需要的时候握紧我的手。

youdao

When I need it, can you give me something to see.

在我需要的时候，能不能，给我点看得见的在乎。

youdao

"When it is all said and done, I think it is time for a 'do over'. We need to start this budget process all over again.

VOA: standard.2009.03.24

If I know I'm going to need something over and over again, I squirrel it away somewhere and then get it back when I need it.

如果我知道我将要反复,使用一个东西时,我会把它贮藏起来以后用。

麻省理工公开课 - 计算机科学及编程导论课程节选

Another way of saying it is, I can do this stop when I don't need to. All right?

另一种说法是，我能够停下来，当我不需要做的时候，对么？

麻省理工公开课 - 计算机科学及编程导论课程节选

Will the government help me when I am old or will Medicare be denied when I need it the most?

FORBES: Goodbye Recovery, Hello Recession

It's great to have another set of eyes and someone I trust to go to for advice when I need it.

WSJ: Arnold Palmer's Lessons for His Grandson, Sam Saunders | Golf Journal by John Paul Newport

In full disclosure, I'm not an avid user of Flash, but I do prefer at least having the option to use it when I need it.

ENGADGET: Back to BlackBerry: closing time Mobile