以下为句子列表：
英文: An overflow pipe is a stainless steel or hard plastic tube fitted with a rubber stopper that is inserted into the drain of a sink to maintain a constant water level.
中文: 这种装置指的是一种硬塑料或不锈钢的管，它配有一个橡胶头，用来堵住下水池，以便保持水位。
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英文: Endoscopy: a flexible plastic tube with a tiny camera on the end is inserted into body cavities and organs, allowing the physician to view the suspicious area.
中文: 内镜：可弯曲的纤维管终端带有微型照相机插入身体的腔内或者器官，可以让医生观察可以区域。
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英文: Our factory mainly produces the combination sealing ring, plastic tube ssembly various nonstandard plastic tube assemlby and various oil strainer series of sucktallurgy, mine, machine and light indu-stry, and big steel-making factory etc so that accelerat
中文: 我厂主要生产组合密封圈，胶管总成，液压空气滤清器，滤油器，液位计，并且还承接各种非标胶管总成及各种吸油、回油系列滤油器，本厂热忱为冶金矿山机械轻工各大钢厂等行业服务，加速其现代化的进程。
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