Density operator
[化] 密度算符
🧩 词语组成解析
🗣️ 情景例句
I hope you won't take offense, But will accept what I say here as some fatherly advice.
我希望你不要反感，能够接受我这父亲般的建议。
Lemonade on a hot day is very refreshing.
在暑天喝柠檬水，会使人精神抖擞。
He was just able to lie down on the ground, but could not stand up.
他只能躺在地上，但不能站起来。