Eustasy
海面进退; 海面升降; 冰河变异
🗣️ 情景例句
He's been here for years, he should know the ins and outs of the job by now.
他在这里已经好多年，现在理应熟悉各方面的工作了。
A friend without faults will never be found.
没有缺点的朋友是永远找不到的。
Is there any water in this kettle?
这水壶里有水吗？