Bivariate
[医] 二元变量
🗣️ 情景例句
They all work hard, without exception.
他们个个努力工作，无一例外。
Who is this?I don't recognize your voice.
你是谁？我听不出你的声音。
Please come in and sit down. But come to school earlier next time.
但下次要早点到校。