以下为句子列表：
英文: Customer optional cooling water machine for laser tube, greatly prolonging the working life of the tube and bettering engraving effect.
中文: 用户可选的激光管专用冷水机，大大提高激光管的工作寿命和雕刻效果。
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英文: The boiled water machine is direct to connect water pipe,make headwaters with the air partitions the decrease pollution,keeping the fluid matter is fresh.
中文: 开水机直接连接自来水管、使水源与空气隔开减少污染，保持水质新鲜。
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