Moreover, the ratio of threonine and serine to isoleucine, leucine and valine in the amniotic fluid of spina bifida fetus is higher than normal.是什么意思_Moreover, the ratio of threonine and serine to isoleucine, leucine and valine in the amniotic fluid of spina bifida fetus is higher than normal.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句