Cdh
abbr. constant differential height 常微分顶点
🗣️ 情景例句
And let Rita Mae do the selling at the boutique.
而让Rita Mae在时装店里负责销售。
At least everyone's all right.
至少大家都没事。
Here are the two originals of the contract we prepared.
这是我们准备好的两份合同正本。