基本開集basic: Basic = Basic English. open: adj. 1.開著的,開放的;可進入的,可分享的 (to ...set: vt. (set; setting) 1.放;擱;貼;靠 ...open basic: 分式基本步basic set: 基本集下載手機詞典可隨時隨地查詞查翻譯