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the person in charge of a ship or commercial aircraft 船长；机长 Captain Cook 库克船长 The captain gave the order to abandon ship. 船长下令弃船。 The captain of the ship invited them to dine at his table. 船长邀请他们在他的餐桌上吃饭。 The captain of the plane was already announcing our arrival. 机长已经在宣布我们的到达。 Her husband had been a ship's captain. 她的丈夫曾是一名船长。 Captain Jones and his co-pilot 琼斯上尉和他的副驾驶
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an officer of fairly high rank in the navy, the army and the US air force （海军）上校；（陆军或美国空军的）上尉 Captain Lance Price 兰斯 · 普赖斯上尉 She has since been promoted to the rank of captain. 此后，她被提升为上尉。 Her father had been a captain in the army. 她的父亲曾是一名陆军上尉。
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the leader of a group of people, especially a sports team 首领；领导者；（尤指运动队的）队长 She's a former captain of the English national team. 她是英国国家队的前队长。 He has just been made team captain. 他刚刚被任命为队长。 The appointment of the former England captain as their new manager is bound to boost morale. 任命这位前英格兰队长为他们的新经理一定会鼓舞士气。
an officer of high rank in a US police or fire department （美国警察局的）副巡长；（美国消防署的）中队长
Word Originlate Middle English (in the general sense ‘chief or leader’): from Old French capitain (superseding earlier chevetaigne ‘chieftain’), from late Latin capitaneus ‘chief’, from Latin caput, capit- ‘head’.