N-COUNT; N-TITLE
（陸軍、海軍陸戰隊、空軍）中尉，少尉；（海軍）上尉；（美國警察的）警督，小隊長
A lieutenant is a person who holds a junior officer's rank in the army, navy, marines, or air force, or in the American police force.
例句
Lieutenant Campbell ordered the man at the wheel to steer for the gunboat.
坎貝爾上尉命令舵手將船開向炮艇。