你可以拨打一个号码，对账单提出质疑。

It's got a number you can call to query your bill.

《柯林斯英汉双解大词典》

如果你的宿舍或公寓有电话、手机或其他任何电话号码，可以通过谷歌声音把它们集成为一个号码。

If you have a phone in your dorm or apartment, a cell phone, and any other phone numbers, consolidate them into one number with Google Voice.

youdao

没有名字，只有一个号码。

With no name, just a number.

youdao

It occured to me yesterday in my class that maybe someday there won't be social security numbers anymore, and on birth everybody will be given an e-mail address.

我昨天上课的时候想到,或许有天大家出生时,得到的将不是社会福利号码,而是一个邮箱地址。

麻省理工公开课 - 电影哲学课程节选

Without showing your neighbor what you're doing, put in the box below a whole number between 1 and a 100 We will calculate the average number chosen in the class.

从1到100之间选择一个号码填到,下面的方框内,不要让你同桌看到,我们会计算全班的平均数

耶鲁公开课 - 博弈论课程节选

It's like you have a social security number or other ID number, which positively--there might be another person with the same name as you, God forbid, but you at least have your own number, which is guaranteed to be unique to you.

就好比社保号,或者其他身份号码,很有可能,有另外一个人,和你重名,希望这不要发生,但你至少有唯一的识别号,用于区分自己和他人

耶鲁公开课 - 金融市场课程节选