来自《耶鲁大学开放课程：生物医学工程探索 第24集 第24集》
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10,000 X's that are thought of in laboratories,一万个X实验室阶段期待的药物 -
only one of them eventually gets approved by the FDA.只有一个真正的得到FDA的批准 -
This is why drug development这就是为什么在这个国家中 -
costs so much money in this country,药物研发花费如此巨大的原因 -
because you have to look at a lot of compounds因为你需要观察许多化合物 -
and test them pretty extensively to find the one并进行一系列试验 -
that's really useful for treating disease.来找到对治疗疾病真正有效的药物 -
I don't think we want to change that,我不认为我们能够改变这一切 -
because this process of FDA approval was因为FDA批准的这个过程 -
introduced early in this century从本世纪早期开始 -
when people were selling drugs在人们还在通过走街串巷 -
out of the back of covered wagons and moving from town to town.用大蓬马车卖药时就已经引入了