supernatant發音名詞1上清液、上層澄清液生物化學After centrifuging the sample, carefully pour off the supernatant.樣本離心後，小心倒掉上清液。形容詞1上層的、浮在上面的專業The supernatant liquid was collected for further analysis.上層的液體被收集起來做進一步分析。