Covariance
n. 协方差\\n[化] 协方差
🗣️ 情景例句
you could establish out of your home,
可以在家中开创
A thousand friends are few, one enemy is too many.
朋友千人尚觉少，仇敌一人犹嫌多。
Oh, listen to the loudspeaker. I think Mr. Hu is going to tell us the result right now.
哦，请听广播。我想胡先生马上就要宣布比赛结果。