電話支局交換分機branch: n. 1.(樹)枝〔泛指大枝或小枝;bough 特指大枝 ...exchange: vt. 1.(以某物與另一物)交換,調(diào)換 (for). ...branch office, branch exchange: 支局automatic branch exchange: 用戶自動小交換機; 自動交換分機automatic private branch exchange: 專用自動小交換機下載手機詞典可隨時隨地查詞查翻譯