May I ask you a question regarding to mouthwash liquid?
所有跟贴·加跟贴·新语丝读书论坛
送交者: shine 于 2011-04-26, 12:24:04:
回答: might be angry with you or in fear 由 菲菲 于 2011-04-26, 12:14:07:
after you spit out, what is those dark blue thing in the sink? It keeps bothering me for a while. According to online search, some said that was the food crumb stuck in the teeth gap. The other said that was the gum tissue destroyed by virus or bacteria. I prefer to the latter based on my observation.
所有跟贴:
加跟贴