The astronauts survived by rationing water and food while using the lunar lander as a lifeboat before returning to the command module for re-entry to Earth.

VOA: standard.2010.04.04

At the end of the day, you can implement the exact same program using a while loop that you can using a for loop, it's just your code is going to look slightly different.

最终，你可以执行这个程序,再使用for循环的地方使用while循环，这只是使你的代码看起来稍微有点不同。

哈佛公开课 - 计算机科学课程节选

She made each hand as an example to students while she was teaching a class on drawing using free-motion embroidery.

VOA: special.2009.11.04

He says he learned about using lambs while visiting wineries in New Zealand.

VOA: special.2009.07.14

Mister Fosko suggests darkening windows or using sunscreen and protective clothing while driving.

VOA: special.2010.07.06

Before spring training, Rodriguez admitted to using steroids while he played with the Texas Rangers in 2001-2003.

VOA: standard.2009.12.24

Mr.Ahmadinejad's assault against opposition leaders comes at a time when he is being criticized by his own supporters for using poor judgment in trying to form a new government, and while Supreme Leader Ayatollah Ali Khamenei has softened criticism of the opposition.

VOA: standard.2009.08.28