David: We'll let it loop once more.
大卫:我们再放一次音乐。
To use it, loop the scale's strap around the suitcase handle and lift the scale and bag off the ground for a few seconds.
使用它,让称带圈住手提箱的把手,提起称,使行李离地几秒钟。
> David: We'll let it loop once more.
>,大卫:我们再放一次音乐。
All right, you can see that this little piece of code, it's got a loop in there, and what's it doing?
好,你们看到的这一小块代码,是做了一个循环吧?,他在做什么?
Well, we say at the top of the loop, when it goes up and comes down the velocity is 0.
在曲线顶端,当物体上升,然后速度为0时候
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