backstitch detail来回针脚
backstitch embroidery回针针迹刺绣
The Backstitch回针绣
Whipped Backstitch绕线回针绣
N（名词） a strong sewing stitch made by starting the next stitch at the middle or beginning of the preceding one 倒缝针法
V（动词） to sew using this stitch 倒缝