pitch of thread

例句：

1. 1.The artist carefully stitched the fabric together to create a beautiful pattern.
   这位艺术家小心翼翼地将布料缝在一起，制作出美丽的图案。
2. 2.The child carefully untied the knot in the thread and continued to work on his project.
   这个孩子小心地解开了线头的结，继续他的项目。
3. 3.The old woman carefully measured the length of the thread before beginning her sewing.
   这位老妇人仔细测量了线的长短，才开始她的缝纫工作。