You need a light, I'd find a match.

你需要光亮，我将找一根火柴。

youdao

You need a light, I'd find a match.

你若需要光，我有火柴。

youdao

Well, you need a light.

还缺一盏灯。

youdao

By October,you may need to wear a light jacket, especially after sunset.

VOA: special.2009.09.21

So, for example, we were talking about a threshold frequency as in a minimum frequency of light that you need in order to eject an electron from a metal surface.

举个例子来说，我们谈论的临界频率是,光从金属表面逐出一个电子,所需的最小频率。

麻省理工公开课 - 化学原理课程节选

You don't need a light switch or a light bulb or an iPhone app to turn something on or off.

你不需要一个电灯开关,或者一个电管,或者打开关闭一个iPhone应用程序。

哈佛公开课 - 计算机科学课程节选

In addition to this method of capture, you will need a light gauze net .

FORBES: On Nature

There's a small included stylus that slots in at the top of the screen (or the bottom, the screen auto-flips vertically based on how you hold the device) but while the stylus is fun for drawing notes, all you really need is a light tap or swipe with your fingers to operate the device.

ENGADGET: iriver Story Touch Edition preview

You need to understand what a light QE2 announcement would mean.

FORBES: Helicopters Throwing Fewer Dollars Is A Good Thing