Danger classes
[化] 危险等级
🧩 词语组成解析
danger
['dendʒɚ]
n. 危险;危险物，威胁;
n. 级别, 阶级（class复数形式）
🗣️ 情景例句
Did you see the washcloth
你看见浴巾
Will you please lock the door when you leave?
请您当你离开时，锁门？
A few minutes later
几分钟后