bristle up 中文意思是什麼
bristle up
解釋
昂首作勢表示憤怒或輕蔑之意-
Keep 45 degree angle between bristle and teeth surface and press the part between teeth and gums. then make some small circles gently. followe with up - and - down motions from the gum line
將牙刷刷毛與牙表面成45度角斜放並輕壓在牙和牙的交界處,輕輕地做小圓弧的旋轉,上排的牙從牙處往下刷,下排的牙從牙處往上刷。
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