例句與造句

1. irrigating devices help to flush out corners under braces and bridgework, but they're not effective substitutes for brushing and other physical means .
   沖洗器有助于沖洗支架和橋托下的角落，但它們不能有效地代替刷牙和其他物理方法。
2. It's difficult to find outer corner in a sentence. 用outer corner造句挺難的