剑桥词典 flossing noun [U] (TEETH) the practice of cleaning between your teeth using dental floss 用牙線清潔（牙縫） Regular flossing is essential for healthy gums . 經常用牙線清潔牙縫對保持牙齦健康有必要。 flossing noun [U] (BEHAVIOUR) US slang behaviour that is intended to attract attention or admiration 刻意引人注目（或仰慕） 返回 flossing