Let me write soh cah toa at the top because this is really just trigonometry.

让我在顶部写上 soh cah toa 因为这实际上只是三角函数。

Video recordings avoid these problems toa large extent, but even they have limitations (the camera cannot be everywhere), andtranscriptions always benefit from any additional commentary provided by an observer.

录像可以大大避免这些问题，但是录像也有一些 局限性（镜头并不能拍到每个角落）。而且文字记录也总是受到研究人员的附加评论的影响。

And it is precisely that reality that has brought us toa point where we now are on defense, where we are hoping that this does not get much, much worse.

正是这种现实使我们现在处于防守状态，我们希望情况不会变得更糟。