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
taking a vacation together--with the family.
要一起渡个假， 全家一起。
As you all know, doing business is not an easy thing to do.
大家都知道，做生意并不是一件容易的事。
I have just received a letter from my brother, Tim.
我刚刚收到弟弟蒂姆的来信，