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
he could be so valuable.
他或许能够有所用。
I hope you get there on time.
我希望你准时到那里。
You have a very good memory.
你的记性真好。