These adjectives are frequently used with the following nouns. 这两个形容词常与下列名词连用：

• Dual describes something that has two parts, uses or aspects. * dual 描述有两个部分、两种用途或两个方面的事物。
• Double can be used with a similar meaning, but when it is used to describe something that has two parts, the two parts are usually the same or very similar. * double 具有相似的意思，但所描述事物的两个部分通常是相同或相似的。
• Double, but not dual, can describe something that is made for two people or things, or is twice as big as usual. 指供给两人或两事物的东西或较平常大一倍的东西用 double，不用 dual。