请问这句怎么翻译? pscs obtained from silky fowl feet using four acid extractions exhibited melanin content; 用四种酸从乌骨鸡脚中提取得到的虫草多糖中显示有黑色素的存在; whereas no similar observations were found in that of broiler feet by acetic acid extraction (fb). 然而用醋酸从烤乌骨鸡脚中提取物中并没有类似的观察。查看更多