Thread mandrel1
[机] 螺纹心轴
🧩 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
The rest of our family went to the movies.
我们家其余的人都去看电影了。
There must be someone behind the door.
门后必然有人在。
always assuming,of course, that the sea is calm.
当然，这一切只有在大海风平浪静的情况下才有可能。