a.
used with some nouns to make a word meaning the period of time someone has a particular job or position (与某些名词连用)表示“…期间” He was honoured for his 25-year stewardship of the party. 他由于为党忠诚工作了25年而受到嘉奖。
a lifelong friendship 终生友谊
Synonyms and related words