Nabla
纳布拉琴, 劈形算符(数学符号), 微分算符[子]
🗣️ 情景例句
What's the spelling of your family name, sir?
您的姓怎么拼，先生？
Where there is life, there is hope.
生命不息，希望常在。
Those who seek it undertake an arduous journey and can never be sure that they will find it.
那些寻求正义的人走的是一条崎岖的道路，从来没有把握他们最终将到正义。