单词 | tooth whitener |
释义 | tooth whitener Regulators have been attempting to clarify the law by prosecuting unlicensed tooth whiteners. Times, Sunday Times Every single product in five categories - smoke alarms, helmets, teeth whiteners, carbon monoxide alarms and balloons - failed to meet safety standards. Times,Sunday Times Tooth whiteners in toothpastes work through a mechanical action. Retrieved from Wikipedia CC BY-SA 3.0 |
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