答疑

liú xia bàn xiǎo shí lái dá yí

留下半小时来答疑

set aside half an hour for questions and answers

jìn xíng kè táng dá yí

进行课堂答疑

answer questions in class

tā zhào jí yī bān zhuān jiā lái dá yí jiě huò

他召集一班专家来答疑解惑。

He has assembled a team of experts to handle queries.

wǒ fēi cháng lè yì wèi tā men dá yí

我非常乐意为他们答疑。

I'll be only too pleased to help them out with any queries.