The bean thanked him most kindly. However, because he had used black thread, since that time all beans have had a black seam.
豆子好好地谢了裁缝，可由于裁缝用的是黑线，所以豆子的身上至今还留有一条黑缝。
2
Sewing thread tension and stitch density are selected by the result of orthogonal experiments as two variable parameters to study the effect of sewing parameter on seam pucker.
实验结果显示，缝纫线张力、针迹密度是对缝口缩皱影响较大的缝纫参数。
3
If you break one thread in the seam you can pull it apart.