不过，要缩小这些飞行引擎、电池、机械促动器、中控电子装置，以使这些飞行器够轻够小地完美飞行，还是相当困难。

But it remains hard to shrink engines, batteries, mechanical actuators and control electronics to the point where they are small and light enough to fly without impairing their performance.

youdao

由高分辨率飞行影像取得的数据使得研究人员能够建立近乎完美的数学模型，来揭示那柔软的、扭转的翅膀怎样推动昆虫穿过空气。

Data from the high-resolution flight images allowed the researchers to create a near-perfect mathematical model of how the flexible, twisting wings propel the insect through the air.

youdao

这次完美的飞行使得我们可以进行下一阶段的研究，在未来几周内，我们将把F - 15e1运送到试验的距离来发射AIM - 120。

This flawless flight allows us to move into the next phase. In the next couple of weeks, we will ferry F-15E1 to the test range and launch an AIM-120.

youdao

Well, that's what happens but most of them made it all right So, that's the way it is in finance as well.

是这样的，但是大部分的飞行都是完美的,所以经济也是这样的。

耶鲁公开课 - 金融市场课程节选