translation.en: Wouldn't it be nice to be able to a test a drug to see if it's effective and safe without having to put patients at risk, because that first time you're never quite sure?
translation.zh: 如果我们不用在人体上进行试验 来检测一项药物是否安全有效 那岂不是很棒？ 因为第一次总会有风险