eighteennum.十八
Eighteen cents. I have six.1毛8分钱,我已有了6分钱。
eighteen incompatible medicaments十八反
Eighteen traditional Chinese herbs十八味中药组方
Eighteen minus nine equals nine.十八减九等于九.
Eighteen minus seventeen is one.十八减十七等于一。
eighteen dinds of laryngeal diseases十八喉风
eighteen anti-accident measurement十八项反措
Eighteen Nation Disarmament Committee十八国裁军委员会
Eighteen-Nation Disarmament Conference十八国裁军会议
Eighteen-year-olds qualify to vote.年满十八岁者有选举权。