他们验明6种植物有可能提炼出药物麻醉剂。They identified six plants as having potential for development into pharmaceutical drugs.石油工程师规划并管理石油的提炼。Petroleum engineers plan and manage the extraction of oil.述评是从先前刊登在主要专栏的文章中提炼出来的。Reviews are di...
人类仍有尾巴退化的痕迹.A human being has the vestige of a tail.杂质和污染对退化的作用不能忽视.The role of dopants and contaminants in degradation cannot be ignored.虚圆点实际上是一退化的二次曲线.The circular points are really a degenerate conic....