Unthreaded hole
[化] 光孔
🧩 词语组成解析
没有螺纹的
hole
[hol]
n. 洞，孔;洞穴，穴;缺陷;<口>绝境;
vt.& vi. （在…上）打洞或穿孔;
vi. 凿洞;（高尔夫球等）进洞;
🗣️ 情景例句
I've heard a lot about you, sir. Now I finally have the chance to meet you in person.
先生，久仰大名，现在终于让我亲自见到你了。
Whe angry, count ten before you speak; if very angry, a hundred.
怒时数十再说话，大怒数百方开言。
But the historian attempting to reconstruct the distant past is always faced with a difficult task.
但是，历史学家企图重现遥远的过去可是一项艰巨的任务，