translation.en: Do you know that it takes years for a drug to go from an idea to being tested on cells in a laboratory, to animal studies, to then clinical trials on humans, finally to go through a regulatory approval process, to be available for your doctor to prescribe to you?
translation.zh: 你知道一种药物从一个想法开始， 到在实验室里对细胞进行测试， 到动物研究， 到临床人体试验， 最后再经过监管审批程序， 经由你的医生开处方给你， 这一系列过程需要多少年吗？