教他们如何用牙刷转圈儿刷牙以免得蛀牙。
And I taught them how to brush their teeth in tiny circles so they wouldn't get cavities.
我给孩子们买来带泡泡糖香味的牙膏，教他们如何用牙刷转圈儿刷牙以免得蛀牙。
I bought my children bubble gum flavored toothpaste and I taught them how to brush their teeth in tiny circles so they wouldn't get cavities.
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