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来源:雅诚德英语网
Paste and gel formulations often contain substances like glycerol to prevent the toothpaste from drying out.
膏状和凝胶状牙膏通常含有一些像甘油这一类能够防止牙膏脱水的物质。
Paste and gel formulations often contain substances like glycerol to prevent the toothpaste from drying out.
膏状和凝胶状牙膏通常含有一些像甘油这一类能够防止牙膏脱水的物质。