boatswain (also bo'sn, bos'n, bo'sun) / 5bEUsn;`bosn/ n senior seaman on a ship who supervises the crew and is responsible for the ship's equipment 水手长(管理其他水手并负责船上设备者). bob / bCb; bBb/ v (-bb-) 1 [I, Ipr, Ip] ~ (up anddown) move quickly up and down...