Under the control of a Z-80 single board computer, a spool of fine thread up to ten thousand meters can be measured point by point and from end to end.

在Z - 80单板机的控制下，可将一轴成千上万米长的细丝从头至尾进行逐点测量。

youdao

This sort of thread pops up every 20 or 30 years.

BBC: Badgers: Splitting public opinion for more than 200 years

Nadal misjudges a low forehand at the net to make it 30-30 and Murray then races in to thread a backhand winner up the line for 30-40 and break point .

BBC: French Open day 13 as it happened

Dear friends, dear lawgivers, dear parliamentarians, you are picking up a thread of pride and self-esteem that has been almost but not quite, oh no not quite, not ever broken or forgotten.

BBC: NEWS | UK | Scotland | 'Open the Doors!'