“The answer is zero”真的不是“答案是零”！90%的人都不知道！
老外对你说：The answer is zero.
No matter what you have done, the answer is zero.
A: How is the programme?
B: The answer is zero.
Stop answering your mother back!
I'd generally talk my father round, but never answer back.
talk sb. round
answer the door
I'm on the phone. Could you answer the door for me?
answer the call of nature
Just a moment. I have to go to answer the call of nature.
answer for / to
Do you really think the company will be made to answer for the problems
that their pollution causes among the local people?
That is an indirect answer to the question.