名词
中文翻译：主弹簧
同义词：
['mainspring', "mainspring coil例句：1. The car's mainspring broke", "so it wouldn't start.（汽车的主弹簧断了，所以它发动不了。）2. The mainspring was replaced with a new one.（用一个新的主弹簧替换了旧的。）"]
例句：
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1. The car's mainspring broke, so it wouldn't start.
汽车的主弹簧断了，所以它发动不了。
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2. The mainspring was replaced with a new one.
用一个新的主弹簧替换了旧的。
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3.The mainspring is responsible for the car's power.
主弹簧负责汽车的动力。