劍橋詞典a piece of equipment that can be connected to a computer to give it an extra use （電腦）附加設(shè)備，附件 A printer is a useful add-on. 打印機是個很有用的電腦附加設(shè)備。 an extra part that is added , especially to an officially organized plan , system , agreement , etc. （尤指正式計劃、制度、協(xié)議等的）附加部分，附加項目 Legal expenses cover is often sold as an add-on to household insurance policies . 訴訟費用險經(jīng)常作爲(wèi)家庭財産保險的附加險出售。 返回 add-on