It had three major parts. One was the command module.

VOA: special.2009.07.22

And then finally, this number three command does what?

那最后，这三个命令式做什么的呢？

哈佛公开课 - 计算机科学课程节选

Well,you can just--an engineer will just sit there and isolate that second of sound and then give a "times three" command and "boom," well,look at Pavarotti hold out that note.

嗯，你可以想象，工程师会只坐在那里，分离出的第二个声音,然后给了三拍命令和砰“,好吧，看帕瓦罗蒂能拖出那个音。

耶鲁公开课 - 聆听音乐课程节选

three,the international community, including the forces under General McChrystal's command, are going to go all out to help make this a success."

VOA: standard.2009.10.28