spare part
柯林斯詞典
1. N-COUNT Spare parts are parts that you can buy separately to replace old or broken parts in a piece of equipment. They are usually parts that are designed to be easily removed or fitted. 備用零件
In the future the machines will need spare parts and maintenance. 這些機(jī)器將來(lái)會(huì)需要備件和維脩保養(yǎng)。
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