Nabla
纳布拉琴, 劈形算符(数学符号), 微分算符[子]
🗣️ 情景例句
and Mrs. Montefiore has reserved the honeymoon suite for us. Montefiore
太太为我们保留了蜜月套房。
My son wants to get married in June.
我的儿子想要在6月结婚。
Sorry, I don't know.
对不起，我不知道。