Deltation
三角翼, 三角洲化, 三角洲形成作用
🗣️ 情景例句
He's coming over to talk about it.
他就是要来谈这个问题。
Life is short and time is fleeting.
人生短暂，光阴易逝。
You should learn these words by heart.
你应该把这些词背熟。