boatswain's chair
短语（高空作业用的）吊椅
词形变化
boatswain's chairs
复数
boatswain's chairs
释义与例句
n.
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1.
A short board or other seating, secured in a bridle of ropes, used to hoist a man aloft or over the ship’s side for painting and similar work.
航海 交通