dilate
/daɪˈleɪt/verb
1
- make or become wider, larger, or more open（使）膨胀; （使）扩大：
no obj. her eyes dilated with horror她出于恐惧瞪大了眼睛
with obj. the woman dilated her nostrils.那个女子张了张鼻孔。
2
- no obj.
dilate on
speak or write at length on (a subject)详述; 铺叙。
派生词
dilatable
adjectivedilation
noun词源
late Middle English: from Old French dilater, from Latin dilatare 'spread out', from di- 'apart' + latus 'wide'.