Cdh
abbr. constant differential height 常微分顶点
🗣️ 情景例句
It could be Alexandra.
可能是 Alexandra 。
Do you live across from the Communication Bank?
你在交通银行对面居住吗？
it is not always safe by the time it reaches the tap.
等水到达龙头时就不一定总是安全的了。