剑桥词典 flossing noun [U] (TEETH) the practice of cleaning between your teeth using dental floss 用牙线清洁（牙缝） Regular flossing is essential for healthy gums . 经常用牙线清洁牙缝对保持牙龈健康有必要。 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