46. News-Track COVID-19

词汇

1.               contact 联系，接触         

2.               positive 积极的

3.               notify 通知，通告

4.               alert 向…发出警报

5.               infected 被感染的

6.               prior 先前的

Apple and Google build smartphone tool to track COVID-19

Tech giants Apple and Google are teaming up to create a system that would let smartphone users know when they've come into contact with someone who has COVID-19.

The technology would rely on the Bluetooth signals that smartphones can both send out and receive. If a person tests positive for COVID-19, they could notify public health authorities through an app. Those public health apps would then alert anyone whose smartphones had come near the infected person's phone in the prior 14 days.