The single machine and thread regulating device respectively do the action of thread hanging, thread taking, thread discharging, thread feeding and groundthread locking.
单机和调线器分别作挂线、要线、吐线、上线、锁住底线动作。
2
It was far from certain, and it took many months to run this thread to ground.
那时候还不能确定，我们花了很多月的时间去确定这条线索。
3
The puppy in my uncle's always plays with balls of thread which fall to the ground.