your obedient servant.
你的忠实的奴仆
Your obedient [humble] servant
(公函结尾写于签名前的客套话)你的恭顺的仆人; 谨启, 敬上
engage [keep] a servant
雇仆人
make atomic energy a servant of the people
使原子能为人民所用
例句
Fire and water may be good servants, but bad masters.
[谚]水火是忠仆, 用之不慎成灾主。
A politician should be a servant of the people.
政治家应当是人民的公仆。
Ministers are called the servants of God.
人们称牧师为上帝的奴仆。