单词：scours
scours的用法和样例：
例句
- Police scoured the woods (looking) for the body.警方到树林各处(寻)找那具尸体。
- The torrent scoured a gully down the hillside.那激流顺山坡而下冲出一条水沟。
- The police scoured the area looking for the lost child.警方搜遍这个地区寻找这个走失的孩子。
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