You know you should floss, but "should" is not enough.
你明白应当用牙线清洁牙齿，但“应当”是远远不够的。
Hold the floss tightly between your thumbs and forefingers, with about an inch (2.5 cm) of floss between them.
两只手的食指和大拇指分别捏紧牙线的一端，中间留出一英寸长（2.5厘米） 。
Craft Resources also sells yarn and embroidery floss.
“手工之家”也售卖纱线和绣花丝线。
你也该用牙线清洁牙缝。
Are Asians more likely to floss their teeth?
亚洲人用牙线清洁牙齿的比例更高吗？
Wind the dangling floss around the middle finger of the other hand.
将悬挂着的牙线缠绕在另一只手的中指上。
所以你也该用牙线。
每天使用牙线。
Brush after each meal and floss daily.
每顿饭后刷牙并每天使用牙线。
FLOSS 会使我们安全吗？
Don't snap the floss between your teeth.
不要让牙线在牙齿间折断。
Brush twice a day, and floss once a day.
一天刷牙两次，用牙线洁牙一次。
Gums that bleed when you brush or floss.
刷牙或使用牙线时，牙龈出血。
——我有时候用牙线。
In addition, you should floss at least once a day.
此外，你每天至少要用一次牙线。
You know you should floss, but should is not enough.
你明白应当用牙线清洁牙齿，但“应当”是远远不够的。
This finger will take up the floss as it becomes used.
使用过的牙线都将卷到这根手指上。
Brush and floss regularly to reduce or prevent stains.
经常用牙刷和牙线洁牙。
Brush and floss regularly to reduce or prevent stains.
经常用牙刷和牙线洁牙。
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