弹弓/弹射器 - 这是每个孩子都喜欢用橡皮筋做的玩具，但是如果你认为做弹弓很难，我相信还会有其他比较实用的方法。
Slingshot / Catapult – Every kid’s favorite thing to do with a rubber band, but if you think hard enough, I bet there are some practical uses for making one of these.
他把石子放进弹弓里，然后往回拉动橡皮筋。“嘣”！
He fitted a pebble into the catapult and pulled back the elastic. Twang!
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