This toothbrush could clean teeth quickly and well.
这种牙刷可以又快又好地清洁牙齿。
I tuck children in who have clean teeth.
我帮刷了牙的孩子上床睡觉。
As you rinse, breathe deeply through your nose. Notice your clean teeth.
漱口时，用鼻子深呼吸。留意你干净的牙齿。
The soft rollers can effectively clean teeth and massage gingiva.
柔软的辊轮可有效地清洁牙齿、按摩牙龈。
The soft rollers can effectively clean teeth and massage gingiva.
柔软的辊轮可有效地清洁牙齿、按摩牙龈。
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