Ectochorion
外绒(毛)膜
🗣️ 情景例句
I'm so sorry.
很抱歉。
As the old cock crows, so doth the young.
有其父必有其子。
They put their hands behind their backs, so you can't see their hands.
他们将手放在背后，这样你就看不见他们的手了。