convention/kənˈvenʃ(ə)n/
n.1. 条约;协议;契约conclude a military convention缔结军事协定
2. 习俗;习惯Convention now allows women to smoke in public.现在习俗允许妇女在公共场所吸烟。
It is the convention for men to wear suits on formal occasions.男子在正式场合穿套装是一种社会习俗。
3. 会议;集会;代表会议a teachers' convention教师代表会议