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
I heard the professor of that class is very good.
我听说那个班的教授很好。
Out of sight, out of mind.
久违情疏。眼不见，心不烦？
He did not see the bag until it was too late.
等他看见袋子时已经太晚了。