Usta
abbr. 美国网球协会（United States Trademark Association）
🗣️ 情景例句
My mother is terrific at any kind of sewing.
我母亲做任何针线活都棒极了。
It is a good horse that never stumbles.
良马不失蹄。
He did not know from which part of Africa his ancestor had come.
他不知道祖先来自非洲的什么地方。