bosun的复数形式怎么写？

n.商船甲板长，水手长...

The bosun has a lot of knowledge and practical experience in seamanship.水手消存在丰盛的船艺常识跟实际教训.Please don't forget to remind the bosun of the meeting.请不要忘记提醒水手长开会.Are we ready to sail, bosun?水手长,我们准备开船了 吗 ?...

bosun的音标：bosun的英式发音音标为：['bəʊsn]bosun的美式发音音标为：['bosən]...