| 单词 | add-on |
| 释义 | add-on UK ['æd.ɒn] US [-ɑ:n] noun countable ■a piece of equipment which can be connected to a computer to give it an extra use （电脑）附加设备，附件 •A modem is a useful add-on.数据机是个很有用的附件。 ■an extra part which is added, especially to an officially organized plan, system, agreement, etc. （尤指正式计划、制度、协议等的）附加部分，附加项目•Legal expenses cover is often sold as an add-on to |
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