Conclusion: Silica gel column chromatography and crystallization are simple and rapid Methods: To isolate gardenoside.结论: 柱层析和重结晶方法是简单、速分离栀子苷的有效办法.This paper advances the preparation method of erucamide by direct ammonol...
It astonishes me that he could be so thoughtless.我真没料到他会如此轻率.How very thoughtless. I'll give him a piece of my mind.真是太没头脑了,我要告诉他我很生气。be thoughtless of danger不考虑危险I wonder why you are so thoughtless of others.我很奇怪, ...
Never mind. Please don't go for it. I shan't want it.没关系. 请不要去拿了, 我用不着.We can't go, for it is raining.我们不能去, 因天正下着雨.When she heard about the chance for promotion, she decided to go for it.当她听到升迁的机会时, 她决定冒险...