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
Radio says sunny and mild.
广播说是晴天 温暖适中。
How are you going?Are you going by boat?
你怎样去?坐船去吗？
We are standing on the left.
我们站在左面。