她用钢丝球用力擦洗锅底，直到它变得光亮如新。

She ___scoured the pot's bottom with a steel pad until it gleamed.

救援队在森林里仔细搜寻失踪的徒步旅行者。

The rescue team ___scoured the forest for the missing hiker.

猛烈的洪水冲刷着河岸，留下了深深的沟壑。

The violent flood ___scoured the riverbank, leaving deep trenches behind.