They are sea-worn and tiny, but each one calls up a human scene.
它们被大海打磨得光滑而细小，但是每一块都唤起一个人类的场景。
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The impeller of the sea water pump is unevenly worn out.
海水泵叶轮严重单边磨损。
应用推荐
模块上移
模块下移
不移动