同义词： append supplement affix
以上来源于: WordNet
To use this software, you don't need a CD-ROM drive or any expensive add-ons for your computer.
使用这种软件，你不需要为你的电脑装光盘驱动器或者任何昂贵的附带装置。
Whether people will actually use these add-ons or not, however, is another matter.
然而，人们是否真的用得上这些附加功能，又是另一回事了。
This certainly reduces the time to create and publish the add-ons to the outside world.
这无疑减少了创建和向外界发布附加组件的时间。
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