从5000个匿名的使用者的手机数据中，宋和同事可以追踪到这些人的轨迹当他们在收到电话和短信时。

Using cell phone data from 50, 000 anonymous users over a three-month period, Song and colleagues were able to track people's movements every time they received a call or a text message.

youdao

从5000个匿名的使用者的手机数据中，宋和同事可以追踪到这些人的轨迹当他们在收到电话和短信时。

Using cell phone data from 50, 000 anonymous users over a three-month period, Song and colleagues were able to track people's movements every time they received a call or a text message.

youdao