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VOA慢速英语:德国启用新冠病毒接触追踪
2020-06-18来源:和谐英语
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app – n. a program for a smartphone or other device that performs a special function
data - n. information or facts about something
transmitting – adj. used for sending out signals for radio, television, or mobile phones
location – n. a place or position
encrypt – v. to change electronic information into a secret system of letters, numbers of symbols
watchdog – n. an organization whose job is to make sure that companies and governments behave legally and provide good services