Ectochorion
外绒(毛)膜
🗣️ 情景例句
How's your family?
你的家人好吗？
That's why he is now concentrating on conversation at a language school near his home.
这就是他在他家附近的一所语言学校专攻口语的原因。
Where are you going to spend your holidays this year,Gary?
加里，今年你们打算去哪里度假？