Stadial
冰退阶段
🗣️ 情景例句
whom I think you've met once or twice before.
我想你以前见过他一两次面。
First, I coundn't keep up with all the paperwork at the office.
首先我应付不了办公室的文书工作。
I am used to traveling by air and only on one occasion have I ever felt frightened.
我习惯了乘飞机旅行，只是有一次把我吓坏了。