dilate

动词 dilate:

1. become wider
   同义词：distend
2. add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
   同义词：elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expand, expound

1. If there are time, I can dilate on the subject.
   要是有时间，我可以详细谈谈这个问题的。
2. The horse dilated its nostrils.
   那匹马张大它的鼻孔。
3. The cat dilated its eyes in the darkness.
   猫在黑暗中睁大眼睛。

di.late

v.（动词）
di.lat.ed,di.lat.ing,di.lates
v.tr.（及物动词）
To make wider or larger; cause to expand.
使膨胀：使更宽或更大；引起膨胀
v.intr.（不及物动词）
To become wider or larger; expand.
膨胀：变得更宽或更大；膨胀
To speak or write at great length on a subject; expatiate.
详述：就一个话题详细地说或写；详述

来源：
Middle English dilaten
中古英语 dilaten
from Old French dilater
源自 古法语 dilater
from Latin dol3t3re [to enlarge]
源自 拉丁语 dol3t3re [扩大]
dis- [apart] * see dis-
dis- [分开] *参见 dis-
l3tus [wide]
l3tus [放大的]

【引伸】
dilat.abil.ity
n.（名词）
dilat.able
adj.（形容词）
dilat.ably
adv.（副词）
dila.tive
adj.（形容词）