For underwater work projects, the workman wears a waterproof suit with his head imprisoned in a metal capsule, while he receives air from above by means of force pumps and flow regulators.
工人在水底下工作时,穿上~件不透水的衣服,头上套了一个金属的盒子,再利用打气机和节流器,就可以从水上面获得空气。
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