Stupid is as stupid does, sir. That's what's leftafter me saying, "When I was in China onthe all-America Ping-Pong team, "I just lovedplaying Ping-Pong with my Flex-O-LitePing-Pong paddle,"
VOA: standard.other
So, it's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddle wheel.
好,让我们看看重物的质量,以及它下落的距离,就知道桨轮做了多少功。
And if you had a motor here that was causing a paddle to move up and down you could cause waves to form at one end of the tank and move from left to right.
如果在水槽里放个发动器,来让水上下起伏,波浪形成于,水槽的一端,然后从左向右扩散。
I only like usingmy own paddle.
VOA: standard.other
now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping a weight can cause a paddle wheel to turn.
机械装置的时候,我真的很着迷,你可以想象,当重物掉落的时候会带动桨轮旋转。
"You paddle out every morning and a sea turtle might be swimming around, birds diving around you, you might even see a shark fin or dolphins and you realize you're just one citizen among all these other species.
VOA: standard.2010.08.04
Now you could do a similar sort of thing, but instead of having a candle, you have a paddle wheel, and the paddle wheel is spun by a weight that's dropping from here to here.
那接下来可以做一件类似的事,但不再是蜡烛,我们将它换成一个桨轮,桨轮末端拴一个重物,它可以从这掉落到这。
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