Variational notation
[计] 变分记号
🧩 词语组成解析
a. 变异的
🗣️ 情景例句
I know it.
我知道。
He was renowned as a portrait painter.
他以肖像画家著名。
The computer will still be unable to predict whether Princeton,New Jersey, will have sun or rain on a day one month away.
计算机无法推断出1个月以后的某一天，新泽西州的普林斯顿究竟是晴天还是雨天。