她小心翼翼地缝补了她最喜爱的衬衫上松动的线迹。

She carefully repaired the loose ___stitches on her favorite shirt.

外科医生使用了非常精细的缝线来闭合切口。

The surgeon used very fine ___stitches to close the incision.

我需要练习我的针法，让刺绣看起来更整洁。

I need to practice my ___stitch to make the embroidery look neater.