本期内容：

The popular short video app TikTok, operated by the world's most valuable start-up ByteDance, is under investigation in Britain over its handling of children's data privacy, marking the latest regulatory hurdle for the company amid its rapid overseas expansion. Earlier this week, the UK regulator is investigating the app's open messaging system, which allows adults to contact children, and how private information from minors is collected and stored.

start-up: 创业公司
technology start-up: 科创公司
Internet start-up: 互联网创业公司
start up: 启动；开动
Start up the engines. 启动引擎。
investigation: n. 调查；调查研究
under investigation over sth. 就某事接受调查
mark: vt. 做标记；标志着 n. 标志
The handshake between the two leaders marks the new era of cooperation.
两国领导人的握手标志着一个合作的新时代。
regulatory: adj. 管理的；控制的
regulate: v. 管控，调节
regulation: n. 行政法规
hurdle: n. 跨栏；障碍
overcome/get over a hurdle: 克服障碍
minor: n.（法律上指）未成年人 adj. 微小的；不重要的 vi. （大学里指）辅修（major in: 主修 minor in: 辅修）
minor injuries: 小伤
a minor role: 不起眼的角色
She majored in English and minored in economics in college.
她大学主修英语，辅修经济学。

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