stroke alteration

例句：

1. 1.He gently stroked the cat's soft fur.
   他轻轻地抚摸着猫的柔软毛发。
2. 2.The artist used a brush to stroke the canvas.
   艺术家用刷子在画布上作画。
3. 3. She stroked her hair with a comb before going to bed.
   她梳头后上床睡觉。