Population variance
[化] 总体方差
🧩 词语组成解析
variance
['vɛəriəns]
n. 变化，变动;不一致;分歧;<数>方差;
🗣️ 情景例句
What's the meaning of NATO?
NATO代表什么？
When I saw they had left, I was shocked to tears.
当我目睹他们离去时，我悲伤得落下了眼泪。
She suddenly got into a panic and stopped her car.
她一惊之下突然把车停了下来。