名词
中文翻译：Unknown
同义词：
['replacement', 'substitute', 'alternative']
例句：
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1. The old car needs a block replacement to keep running smoothly.
这辆旧车需要更换一个零件才能顺畅运行。
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2. The company is looking for a block replacement to replace the current manager.
公司正在寻找一位替代现任经理的人。
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3. The new product has a block replacement that makes it more durable.
新产品有一个替代部件，使其更加耐用。