Nabla
纳布拉琴, 劈形算符(数学符号), 微分算符[子]
🗣️ 情景例句
That's amazing!
太令人吃惊了，真棒！
Excuse me, but could you give me some change?
劳驾，你能换些零钱给我吗？
Last year, however, it came into use.
然而去年机场开始使用了。