Countersunk bolt
[化] 埋头螺栓
🧩 词语组成解析
[化] 埋头孔
bolt
[bolt]
n. 螺栓，螺钉;闪电，雷电;门闩;弩箭;
vt. 筛选;囫囵吞下;（把门、窗等）闩上;突然说出，脱口说出;
vi. （门窗等）闩上，拴住;冲出，跳出;（马等的）脱缰;囫囵吞下;
adv. 突然地;像箭似地;直立地;
🗣️ 情景例句
I'd like two cheeseburgers all-dressed, please.
我的奶酪汉堡什么料都要。
That would be the responsibility of the buyer. We are prepared, however, to provide all the documentation costs.
那是属于买方的责任，我们仅承担提供所有文件的费用。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，