名词
中文翻译：Unknown
同义词：
['launcher', 'catapult', 'launch']
例句：
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1. The engineer used a catapult to launch the rocket into space.
工程师使用弹射器将火箭送入太空。
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2. The catapult was used to launch the projectiles at high speeds.
弹射器被用来以高速发射弹丸。
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3. The catapult was used to launch the projectiles at high speeds.
弹射器被用来以高速发射弹丸。