名词
中文翻译：链
同义词：
['link', 'chain', 'linkage', 'chain of events', 'chain reaction']
例句：
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1. The train's engine was linked to the tracks with a chain.
火车的引擎与轨道通过链条相连。
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2. The scientist used a chain to connect two pieces of equipment together.
科学家用链条将两个设备连接在一起。
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3. The chain reaction started when the fuel was ignited.
当燃料被点燃时，连锁反应开始了。