另一方面，硬毛牙刷刷，刷的积极可能导致经济衰退的牙龈和牙齿的珐琅质磨损，暴露根耦合表面。
On the other hand, a hard-bristled brush, coupled with vigorous brushing can result in recession of the gums and the abrasion of tooth enamel and exposed root surfaces.
河水在他身边打着旋，罗杰斯的手抓住一根雨刷，身体紧紧地贴在挡风玻璃上。
Rogers pressed himself against the windshield and clutched a wiper as the water swirled around him.
他握住侧镜，又伸手抓住一根雨刷。
Holding the side mirror, he reached around to one of the windshield wipers.
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