[dā ying]
（應聲回答） answer; reply; respond
I knocked at the door several times, but there was no answer.
我敲了幾下門， 但沒人答應。
He promised to do his best.
他答應盡力而為。
They promised an immediate reply.
他們答應立即回復。
consent to her request
答應她的請求
He agreed to help me.
他答應幫我忙。