对答

tā néng duì dá rú liú

他能对答如流。

He can respond fluently.

wèn tā huà tā duì dá bù shàng lái

问他话他对答不上来。

He failed to answer the question.

wǒ bù zhī gāi rú hé duì dá

我不知该如何对答。

I don't know how to make a response.

wú fǎ duì dá

无法对答

can't answer the question

tā men bù néng duì dá zhè huà

他们不能对答这话。

They could not answer these things.

àn hào hé duì dá kǒu lìng

暗号和对答口令

a sign and countersign