of.of.的用法
The protein concentrations of the supernatants of the whole cell lysate were determined using a Bio-Rad protein assay kit.这里面有2个of ,翻译的时候,是这样（The protein concentrations of the supernatants ）of the whole cell lysate ,还是The protein concentrations of （the supernatants of the whole cell lysate）这种
也麻烦翻译一下这个句子