Secondly, asynchronous answering and answering in time of lessons are realized.

然后介绍了各课程的异步答疑和实时答疑的实现。

youdao

There is only so much time in the day for answering letters.

白天只有这么多时间用来回信。

《柯林斯英汉双解大词典》

I feel terribly sorry for missing the chance of answering your letter in time.

非常抱歉，我没有及时回信。

youdao

So I want to spend most of this time in a conversation and answering questions, and then I want to spend the rest of the time roaming around the room and kissing and hugging everybody.

WHITEHOUSE: Remarks by the President at a DNC Event

When the coalition came to power, a few targets remained within the policing pledge - promises to treat people with dignity and respect, to be efficient in answering calls, to spend more time on the beat - but even these have now been ditched.

BBC: What do we value about the police?

Washington interns do much of the phone-answering and mail-processing chores that await first-time jobholders in offices across the land.

WSJ: Dwight Lee: A Higher Minimum Wage��but Not for Interns in Congress