Classes
n. 级别, 阶级（class复数形式）
🗣️ 情景例句
Good afternoon, sir.
下午好。
I usually go to bed at about midnight.
我通常在大约半夜睡觉。
But I can't find it. I think I've lost it.
但我现在找不到了。我想我弄丢了。”