Funneling
[醫(yī)]成漏斗形：描述膀胱底及膀胱尿道交接區(qū)
??? 情景例句
The newspapers don't come out till about ten o'clock.
報紙要差不多十點鐘才出來。
In college I majored in math, What was your major?
大學時我主修數(shù)學，你主修什么呢？
I don't know. I can't see!
我不知道，我看不見。