水斗和水泵对于多船体或者多舱的船不是必须的！
A bailer or manual water pump is not required for any multi-hull vessel that has subdivided multiple-sealed hull construction.
本文研究了基于多机器人协调的船体分段对接系统的运动学和对接精度问题。
This paper has studied the kinematics and the precision of a ship block merging system based on the multi-robot coordination.
在多冰山的水域航行时，船员们必须非常小心。经常穿梭于两极海域的船只往往有着特殊的船体，异常坚固。
Sailors must take care when traveling through iceberg-filled waters, and ships that sail in polar seas usually have a specially made hull so that they are very strong.
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