supernatant [ˌsu:pə'neɪtənt]

例句:

• You centrifuge the solution, decant the supernatant, and discard the pellet.
  你然后对溶液离心, 慢慢倒出上清,弃沉淀.对上清液你加更多的硫酸铵.
  
• Methods Manner plate assay, contact hemolysis and supernatant assay were used.
  方法平板检测法, 接触溶血法,上清检测法.
  
• The culture supernatant of tumor cell lines was not cytoxic.
  白血病细胞培养上清液无细胞毒作用.