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来源:雅诚德英语网
Now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping weight can cause a paddlewheel to turn.
现在我真的很沉迷机械装置,但是你可以想象重物掉落的时候会带动桨轮旋转。
Now I'm really fantastic at drawing this mechanical device, but you can imagine that dropping weight can cause a paddlewheel to turn.
现在我真的很沉迷机械装置,但是你可以想象重物掉落的时候会带动桨轮旋转。