The agency is to design its own heavy lift rocket at a cost of three billion dollars.

VOA: special.2010.04.28

And that's really cool because you get to design your own course,

真是太酷了，因为你可以设计自己的课程，

阿卡贝拉组合最棒 - SpeakingMax英语口语达人

And that's really cool because you get to design your own course,

真是太酷了，因为你可以设计自己的课程，

阿卡贝拉组合最棒 - SpeakingMax英语口语达人