With further hydrolysis in the body tissues , silicic acid could be formed .

随着在身体组织里的进一步水解，可以生成硅酸。

But in the area where the researchers were working natural blooms had already depleted much of the silicic acid , which the diatoms use for shellmaking .

但是，在研究者工作的自然增长的地方已经耗尽了所有的硅酸，而硅酸是硅藻制造壳的主要物质。