translation.en: This is not scalable, and also when you do things by hand, even in the best laboratories, you have variations in techniques, and you need to know, if you're making a drug, that the Aspirin you're going to take out of the bottle on Monday is the same as the Aspirin that's going to come out of the bottle on Wednesday.
translation.zh: 无法批量操作，而且由于是靠手工完成， 即使是在最好的实验室， 操作技术也不可能完全稳定。 此外，从事制药工作的人必须知道， 预备周一从瓶子中取出来的阿司匹林 和预备周三取出来的阿司匹林， 必须是一样的。