動詞 dilate:

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

1. If there are time, I can dilate on the subject.
   要是有時間，我可以詳細(xì)談?wù)勥@個問題的。
2. The horse dilated its nostrils.
   那匹馬張大它的鼻孔。
3. The cat dilated its eyes in the darkness.
   貓在黑暗中睜大眼睛。

di.late

v.（動詞）
di.lat.ed,di.lat.ing,di.lates
v.tr.（及物動詞）
To make wider or larger; cause to expand.
使膨脹：使更寬或更大；引起膨脹
v.intr.（不及物動詞）
To become wider or larger; expand.
膨脹：變得更寬或更大；膨脹
To speak or write at great length on a subject; expatiate.
詳述：就一個話題詳細(xì)地說或?qū)?；詳?/br>
來源：
Middle English dilaten
中古英語 dilaten
from Old French dilater
源自 古法語 dilater
from Latin dol3t3re [to enlarge]
源自 拉丁語 dol3t3re [擴大]
dis- [apart] * see dis-
dis- [分開] *參見 dis-
l3tus [wide]
l3tus [放大的]

【引伸】
dilat.abil.ity
n.（名詞）
dilat.able
adj.（形容詞）
dilat.ably
adv.（副詞）
dila.tive
adj.（形容詞）