Cdh
abbr. constant differential height 常微分顶点
🗣️ 情景例句
This DJ is really good.
这个DJ真棒！
Our foreign trade policy has always been based on equality and mutual benefit and exchange of needed goods.
我们的对外贸易政策一向是以平等互利、互通有无为基础的。
Look at the snow! It's thick, isn't it?
瞧这雪！雪很厚，是吧？