Usar
abbr. United States Army Reserve 美国陆军后备队
🗣️ 情景例句
Tom, is that you?
汤姆，是你吗？
The police crept up from behind and took the gangster by surprise.
警察悄悄从背后绕过去，出其不意地将歹徒逮捕。
I know that he's doing his best, but he says that he is a little weak in Chinese.
我知道他非常努力，但他说他的中文有点儿差。