Surest
确信的\\n确实的\\n一定的（形容词sure的最高级 ）
🗣️ 情景例句
Just got back. It's good to see you both again.
刚刚回来。真幸运再次见到你们二位。
I'm studying upstairs.
我在楼上读书。
We are happy to be of help.
我们十分乐意帮助。