看到乔治假慈悲，我感到恶心。The sight of George shedding crocodile tears made me sick.她从他们的脸上看不到慈悲。She saw no pity in their faces.他们要她对犯人慈悲为怀。They asked her to be merciful to the prisoners....
常常是用离心法分段收集沉淀的.Precipitates are usually collected by centrifugation at intervals.它可以用离心法分离.This can be separated by centrifugation.结论: 密度梯度离心法分离获得的人胚胎骨髓间充质干细胞纯度高.Conclusion: High purity of MSC can be obtained by density ...