Danc
abbr. 非腐蚀性除污染剂（decontaminating agent, non-corrosive）
🗣️ 情景例句
If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓， 你应称呼他为 'ma'am' 或 'sir' 。
It's not up to his usual standard.
这次没有达到他平时的水平。
The salvage operation had been a complete failure.
打捞工作彻底失败了。