Nabla
纳布拉琴, 劈形算符(数学符号), 微分算符[子]
🗣️ 情景例句
The private lives of celebrities take up more magazine space than world news.
名人的私生活在杂志上占的版面比国际新闻还要多。
Not at all.
没什么。
Our product is lower priced than the competition.
我们产品价格低廉，具有竞争力。