Eustatism
海面升降性, 海面进退性
🗣️ 情景例句
but I'm not sure I want to be alone.
但我不知道我是否想一个人生活。
He was so angry, he began to jump and down.
他愤怒得开始顿足。
It really takes time.
这样太耽误时间了。