劍橋詞典available when a customer wants or asks for something 應(yīng)顧客要求即可提供的，隨選的 They will sell a voice recognition product as an add-on , on-demand service for their users . 他們會將一個語音識別系統(tǒng)作為附加的隨選服務(wù)提供給用戶。 In the library's warehouse , robots would manage stock and fetch books on an on-demand basis . 在圖書館倉庫里，機(jī)器人會管理存貯并取出顧客隨選的書。 able to be watched at any time 可點播的 Most people in this region do not even have television , let alone on-demand movies . 這個地區(qū)的大部分人連電視機(jī)都沒有，更別說點播電影了。 也見on demand 返回 on-demand