Next up is usta, means used to, usta.

接下来是 usta，它是 used to 的缩写。

The United States Tennis Association (USTA) and Women's Tennis Association (WTA), however, supported Williams' accusations that Ramos' actions were based in sexism.

然而，美国网球协会 (USTA) 和女子网球协会 (WTA) 支持威廉姆斯关于拉莫斯的行为基于性别歧视的指控。