Up,up it flies. After three minutes, its fuel has burned up.

VOA: special.2010.07.07

Now, the first application tends to not be quite as exciting as, for example, all the other organisms people have put it in since then you can have flies, you see transgenic mice that are glowing green with this GFP.

现在看来，第一个应用不像之后,其它放入一些生物一样激动人心,你可以用苍蝇，你可以看到发绿光的转基因老鼠。

麻省理工公开课 - 化学原理课程节选

It may not be as the crow flies and may be long way around,

它可能不是直线最短距离，可能绕得很远，

小心微型出租车 - SpeakingMax英语口语达人

It is spread to humans through the bite of infected tsetse flies.

VOA: special.2010.01.04

until there were flies crawling on it and bugs and mold.

直到那上面爬满了苍蝇和虫子，长满了霉菌。

布鲁克林的房价 - SpeakingMax英语口语达人