Meaning of dāi:
呆
stupid (variant of 呆[dai1]); blank (variant of 呆[dai1]); foolish; stupid; expressionless; blank
tā kàn qǐ lái yǒu diǎn er dāi.
他看起来有点儿呆。
He looks a bit stupid.
Tā zhàn zài nàlǐ yī liǎn fā dāi.
他站在那里一脸发呆。
He stood there with a blank look on his face.
Tā de yàngzi kàn qǐlái yǒudiǎn dāi.
他的样子看起来有点呆。
He looks a bit foolish.
Xuéshēng tīng dào zhège xiāoxi hòu, liǎn shàng xiǎnde hěn dāi.
学生听到这个消息后,脸上显得很呆。
After hearing the news, the student looked very blank.
to stay (variant of 待[dai1])
Tā juédìng zài jiālǐ dāi yītiān.
他决定在家里呆一天。
He decided to stay at home for a day.