The service includes caller ID, voice mail, and call waiting.

这项服务包括呼叫方身份识别、语音邮件和呼叫等待。

《柯林斯英汉双解大词典》

Average Numbers of mediation flows waiting for a token (waiting flows), currently using a token to call a Web service (in process flows) and both (all flows).

等待令牌(等待流)的仲裁流的平均数量，当前使用一个令牌来调用Web服务(在处理流中)和两者(所有流)。

youdao

It's difficult to reach you. Why don't you sign up for a call waiting service?

要跟你通话真不容易呀，不如申请通话中接听服务吧。

youdao

In 2009, she received a call from a Marine who had been waiting more than a year for a service dog.

CNN: Man's best friend helping war veterans heal

Aasen said she was waiting for Maggie to call her back with an update but knew cellphone service was slow in the area.

NPR: Loved Ones Seek Word On Boston Runners After Blast