stitch|stitches

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.

他腿上的伤口需要缝针。

The cut on his leg required ___stitches.

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.