A short blast on the ship's siren warned the dockyard staff ashore. 这艘船的短笛声警告修船所的员工上岸。
A large box open at the top and one side,designed to fit against the side of a ship and used to repair damaged hulls under water. 修船箱一个顶端和一侧开口的大箱子,为合上船体的一侧而设计,用于在水下修补破损的船身。