Surest
确信的\\n确实的\\n一定的（形容词sure的最高级 ）
🗣️ 情景例句
You don't have to work yourself sick.
你不必让自己工作到病倒。
Let me tell you the details.
让我告诉你细节。
It looks as if she's gone away for a few days.
好象她要外出好几天了。