unwary
adj
not cautious or aware of possible danger, etc; not vigilant 无警惕的; 不警觉的
Pot-holes can be lethal for the unwary cyclist. 路上的坑坑洼洼骑车的人一不小心就有致命危险.
🗣️ 情景例句
The mailman just dropped some mail in our box, Grandpa.
邮差刚刚塞进一些信件在我们的信箱, 爷爷。
Of course.
当然。
he said. But I don't have many friends, and I don't enjoy myself very much. I don't know why!