eighteen

num.

十八；十八个；

n.

十八岁；十八的记号；十九世纪；是八点钟

复数：eighteens

1. There are eighteen students in that classroom.
   那教室里有十八个学生。
2. He entered a university at the age of eighteen.
   他十八岁上大学。

A molecular sieve with eighteen-membered rings
Precipitation characteristics in eighteen coupled models
Estimates of worldwide incidence of eighteen major cancers. Int J Cancer
Estimates of the worldwide incidence of eighteen major cancers in 1985
Eighteen-year results in the treatment of early breast carcinoma with mastectomy versus breast conservation therapy
Sleep disordered breathing and mortality: eighteen-year follow-up of the Wisconsin sleep cohort.
Eighteen-month outcomes of house dust mite avoidance and dietary fatty acid modification in the childhood asthma prevention study (C...
First-principles study of cation distribution in eighteen closed-shell AIIBIII2O4 and AIVBII2O4 spinel oxides
Estimates of the worldwide mortality from eighteen major cancers in 1985. Implications for prevention and projections of future burd...
Intracoronary Bone Marrow Cell Transfer After Myocardial Infarction Eighteen Months’ Follow-Up Data From the Randomized, Controlled...