一只手轻轻地抚摸着粗糙的木头。

A hand gently ___strokes the rough wood.

主人轻轻地抚摸着小狗的头。

The owner gently ___strokes the dog's head.

医生建议他控制血压以预防中风。

The doctor advised him to control his blood pressure to prevent ___strokes.

他的划水动作非常高效，每次动作都能游得更远。

His swimming ___strokes are very efficient, helping him cover more distance with each movement.

她用毛笔轻轻一划，在纸上留下一个优美的笔画。

She made a graceful ___stroke with her brush on the paper.