Nabla
纳布拉琴, 劈形算符(数学符号), 微分算符[子]
🗣️ 情景例句
You said you have family in New York.
你说你在纽约有亲人。
That's excellent.
那太棒了。
The rabbit ran to the woods and did not come back any more.
兔子跑进了森林再也没有出来了。