I need to answer a phone call.

我得去回一个电话。

youdao

There's a pressure to answer someone when they call your cell phone merely because they are calling - to not answer is rude.

有一种压力让我们在他人只是拨打过来电话时候就接听- - -不接听就显得粗鲁。

youdao

Do not jump to answer any unscheduled phone call or respond to any other interruption.

不要随意接听没预约的电话或受其他事情的干扰。

youdao

Air gestures also can be used to answer a phone call.

CNN: Hands-off with the Samsung Galaxy S IV

Of course, you don't have to answer a phone call from a marketing concern, but you're breaking the law if you don't give the Census Bureau the details it wants.

FORBES: Fact And Comment

It would be rude to be speaking to someone face-to-face then answer a phone call, but I can be talking to someone, or even sitting listening to a professor in a class, and also quickly answer a text message at the same time.

FORBES: Young People, Stop Just Texting Me and Give Me a Call Once in a While PLZ! Part Deux