hat tip
noun [ C ] (also hat-tip) uk/ˈhæt ˌtɪp/ us/ˈhæt ˌtɪp/
（在问好、致谢的时候）脱帽致意;（网络用语，通常缩写为HT或h/t）用于表示谢谢帮助或受到启发。
the fact of showing thanks for or approval of something someone has done
Nice article - hat tip to Adam for the link.
A special hat-tip goes to the mezzo-soprano whose Erminella sings some of the opera's finest lyrical moments with passion and poise. 特别致谢女中音，她（在歌喜剧《福尔蓬奈》（又名狐狸））扮演的艾娥米内拉充满激情与自信地演唱了歌剧中一些最精彩的抒情曲调。
- More examples
- Hat tip to Suzy for the heads up!
- Thanks for the hat tip and especially for doing a much better job with the graph than I did.
- Hat tip to Pamela Madsen, who mentioned this blog in one of her blog posts, which is where I read about it.