Wis
vt. 知道；以为
🗣️ 情景例句
Hi, Grandpa.
嗨， 爷爷。
Health and cheerfulness mutually beget each other.
健康愉快，相生相成。
But I'm worried about his Chinese.He may fall behind the other students when he comes back.
但我担心他的中文。等他回来后，他可能会落到其他同学后面。