名词
中文翻译：职责
同义词：
['duty', 'responsibility例句：1. He has always been committed to his line of duty.（他始终致力于履行他的职务。）']
例句：
-
1. He has always been committed to his line of duty.
他始终致力于履行他的职务。
-
2.The policeman's line of duty is to protect and serve the public.
警察的职责是保护和服务公众。
-
3. She took on a new line of duty when she joined the fire department.
当她加入消防部门时，她接受了新的职务。