Eustasy
海面进退; 海面升降; 冰河变异
🗣️ 情景例句
Take it easy, Robbie.
不要太紧张 ，Robbie。
Education has for its object the formation of character.
教育的目的在于培养品德。
In our game we also have eleven players in a team, but our ball is like this.
比赛中，我们一个队也有11名队员，不过我们的球是像这样的！