Ddh
abbr. diamond-drill-hole 金刚石钻钻孔; dichlorodimethylhydantoin 二氯二甲海因，二氯二甲基乙内酰胺
🗣️ 情景例句
Sit down, sit down.
请坐， 请坐。
How did you find him?
你是如何找到他的？
You soar effortlessly over high mountains and deep valleys.
你毫不费劲地飞越高山幽谷，