Ectosexine
外表层
🗣️ 情景例句
Can you show me how to apply this make-up correctly?
你能告诉我怎么正确地使用这种化妆品吗？
There's no need!
多此一举！
It was my first flight. I was nervous when the plane took off.
我第一次坐飞机，起飞时我有点紧张。