SAN FRANCISCO, Feb. 24 (Xinhua) -- TikTok, along with its Chinese counterpart Douyin, has become the first non-gaming app to surpass 6 billion U.S. dollars in annual in-app purchase (IAP) revenue, ...

[sə (r)ˈveɪ] v. 查看，审视；总体研究，概述；勘测；（对……）做 例句 Last year, Oklahoma State University researchers found that 47% of those they ...