牙齿上的残留物在口腔内会分解为糖和酸，腐蚀牙齿，形成牙渍。
Remnants of foods will break down in the mouth releasing the sugars and acids that cause damage and discoloration to teeth.
制作了涂渍植物来源的酶和不同化合物的萃取膜，萃取富集了水样中的有机磷农药和农药中间体残留。
The membrane coated with enzyme of plant origin or other chemical compounds has been prepared for the extraction of trace organophosphorus pesticides and their intermediates in water.
要做到这一点，必须勤洗脸，不是自身的面部从在一点一滴的汗渍、泪渍以及不洁之物。
To achieve this, the ground must face, not his face from a trace of perspiration and tears of stains and dirty objects.
要做到这一点，必须勤洗脸，不是自身的面部从在一点一滴的汗渍、泪渍以及不洁之物。
To achieve this, the ground must face, not his face from a trace of perspiration and tears of stains and dirty objects.
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