英语听力精选进阶版 13600

Tracking crime on Twitter

Vocabulary

scanning

to search with a scanner

airwaves

e.g. radio programmes or phone conversations

police radio conversations

private police conversations on wireless¹ devices

crime reporters

journalists that report on criminal activity

residents

people who live in an area or neighbourhood

monitor

to listen to

social networking site

a website used by many people to communicate e.g Facebook

Twitter followers

people who are interested in a person or topic on Twitter

reality

what is really happening

neighbourhood

a community in a town or city

1 wireless   

adj.无线的；n.无线电

参考例句：

• There are a lot of wireless links in a radio.收音机里有许多无线电线路。
• Wireless messages tell us that the ship was sinking.无线电报告知我们那艘船正在下沉。