Triangular thread
[机] 三角螺纹
🧩 词语组成解析
thread
[θrɛd]
n. 线;线索;线状物;螺纹;
vt. 穿成串;将（针、线等）穿过…;用…线缝;给…装入（胶片、狭带、绳子）;
🗣️ 情景例句
Oh?
噢？
Your niece is engaged,isn't she?
你的侄女订婚了，是吗？
I'm calling to see if you would like to have lunch tomorrow.
我打电话给你，是想知道明天一起吃顿中饭怎样？