书城外语雅思英语词汇词根词缀高效记忆:轻松背单词
13398800000083

第83章 di-表示“两个,双”

同根常考词汇:需掌握

◆dioxide[dai’ksaid]n.二氧化物

举例:The lime water has turned cloudy,therefore carbon dioxide has been produced during the experiment.

石灰水变得混浊了,可见在实验中有二氧化碳生成了。

同形:oxide[‘ksaid]n.氧化物

◆dilemma[di’lem,dai‘lem]n.进退两难

举例:She was in a dilemma whether to stay at school or get a job.

是继续求学还是找工作,她感到难以决定。