countersink /'kauntәsiŋk/ 📖 中文释义 vt. 钻孔装埋, 打埋头孔于n. 埋头孔, 锥口钻 🧩 词形变化 现在分词 countersinking过去式 countersank第三人称单数 countersinks过去分词 countersunk 📘 English Definition(英文释义) n. a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface ← countersigns C 字母词表 countersink bit →