The ships deck hoisting machinery such as bow gate, bulkhead valve, stern propeller and so on;

船舶用的甲板起重机械（绞车）、船头门、舱壁阀、船尾推进器等；

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Having nothing better in mind, he hops on board, and the ship sails off, beneath the Golden Gate Bridge, with the Stars and Stripes, at its stern, barely visible under a dying sky.

NEWYORKER: Sail Away