“citizen”指：擁有某國國籍或者擁有某地區合法身份的人，即公民。
“civilian”指：特指軍人或者官員，平民百姓。
citizen: / 's?t?z ? n /，someone who lives in a particular town, country, or state 市民，城鎮居民；公民
例句：We need our schools to teach students to be good citizens.
我們需要學校把學生培養為好公民。
civilian [s?'v?l?n]
平民，百姓