知足常乐: satisfied with what one has (idiom)...
引用: to quote, to cite, to recommend, to appoint, (computing) reference...
允许: to permit, to allow...
大姐: big sister, elder sister, older sister (also polite term of address for a girl or woman slightly older than the speaker)...
稳健: firm, stable and steady...
起哄: to heckle, rowdy jeering, to create a disturbance...
排放: emission, discharge, exhaust (gas etc)...
自愿: voluntary...
