羊群正在山坡上吃草。

The sheep are ___grazing on the hillside.

他在跑步时不小心摔倒，擦伤了手臂。

He accidentally fell while running and ___grazed his arm.

足球擦过他的指尖，差点就进球了。

The football just ___grazed his fingertips, almost scoring a goal.