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1·I can never take air drag out.

我无法消除空气阻力。

2·There is air drag on that tennis ball.

网球受到空气阻力。

3·Reduces air drag and thus also fuel consumption.

减少空气阻力，从而降低燃料消耗。

4·Without the air drag, we would have reached 225 miles per hour.

如果没有空气阻力，可以达到每小时225英里。

5·That never changes if there is no air drag or air friction of any kind.

它未曾变过,如果没有空气阻力,或任何摩擦力。

6·Now comes my last part, and that is, how does air drag influence trajectories?

现在是最后一部分，就是，空气阻力如何影响轨道？

7·I wanted to know how many milliseconds is the touchdown delayed because of the air drag.

我想知道，因为空气阻力，延迟多久以后落地。

8·That's not bad, so this takes the air drag into account, and it is not even an approximation.

并不糟糕，算上了空气阻力，这甚至不是一个近似值。

9·In the absence of any air drag, I would get a nice parabola which will be completely symmetric.

在没有阻力的情况下，会得到一条抛物线，非常均衡的。

10·If I jump from a tower which is 100 meters high I will be weightless for 4.5 seconds ignoring air drag.

如果我从100米的楼上跳下去，无重量时间大概是4。5秒，忽略空气阻力不计。