Bivariate
[医] 二元变量
🗣️ 情景例句
Do you want to sit by the window?
想靠窗坐吗？
Children learn to creep ere they can go.
孩子要走路，先得学爬行。
I am used to traveling by air and only on one occasion have I ever felt frightened.
我习惯了乘飞机旅行，只是有一次把我吓坏了。