Sternest
stern（严厉的, 严峻的）的最高级形式
🗣️ 情景例句
I'm sorry, I really don't know.
对不起，我真的不知道。
Wouldn't you like some coffee?
你想要一些咖啡吗？
We'll get it right out for you.
我们马上就出货。