And it seems that not one single technique is the standard method – so, if that's the case, how do we know if we're doing it right?

似乎没有一种技术是标准方法——所以，如果是这样的话， 我们怎么知道我们做的是否正确？

Scientists wanted to know the structure of a protein-cutting enzyme produced by a retrovirus similar to HIV. They haven't been able to solve the protein structure using standard computational methods.

科学家们很想掌握由反向病毒所衍生的蛋白剪切酶的结构，而反向病毒是指，比如HIV这样的病毒。这类蛋白结构是不能通过标准算法法则推导就直接得出的。

Now, back in the day when I was in secondary school, I used to use the standard prospective revision timetable method, you know, where you plan out your revision in advance, like 6 weeks in advance.

回到我上中学的时候，我曾经使用标准的前瞻性复习法，你知道，就是你提前计划好你的复习，比如提前 6 周。