I want to talk about the substance of the problem instead of staying on the surface.
我想谈论问题的实质，而不是停留在表面。
It is found that Methyl groups staying on the surface of silica nanoparticles though surface reaction make silica be hydrophobic.
由于极短的停留时间，颗粒的表面反应在颗粒表面成功的保留了有机基团，使得颗粒具有疏水性能。
"In the past I have not heard of the" visible, many people infected with TB and HIV dual understanding of just staying on the surface.
“以前我都没有听说过”可见，很多人对结核病和艾滋病的双重感染的了解仅停留在表面。
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