Back on Earth, space scientists and engineers worked around the clock to design and test new ideas to help the astronauts survive.

VOA: special.2009.07.22

I want it to go back around to the test.

我希望它回到测试哪里。

麻省理工公开课 - 计算机科学及编程导论课程节选

Back around to the test. What's ANS squared?

是的，那么下一步做什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

But the council says that is because the test can be taken almost every day of the year at more than 400 centers around the world.

VOA: special.2009.01.08

So what's going to happen here? If I'm inside this FOR, OK, and I'm running around, if I ever hit a place where this test is true, I'm going to execute that return, return that return returns from the entire procedure. OK? So the return comes back from the procedure.

那么这里发生了什么呢？,如果我是在这个for循环里面，我正在运行，如果我运行到test的值为真的地方，我就会执行,这个return将会返回整个程序的值,明白了吗？所以它将会从整个程序中返回值。

麻省理工公开课 - 计算机科学及编程导论课程节选

For the first time, scientists around the world had a limitless number of cells they could use to test the effects of diseases, medicines and chemicals.

VOA: special.2010.07.21

But it could launch Apollo spacecraft on test flights around the Earth.

VOA: special.2009.07.08

"They are around and they stand the test of time because they can still raise questions about what we are going through today."

VOA: standard.2010.04.08