Here are common examples you'll run into across the difficulty levels:
pre-built solution like the regex-automata crate but one of my requirements is that
，这一点在新收录的资料中也有详细论述
Назван способ законно хранить вещи на лестничной клетке20:55
But sociologists insist it’s one of the greatest works of the 20th century. So I figured—what the hell—why not fight through 600 tangled pages? Does it say something interesting? Is it written like this for a reason? Will I learn to like this kind of writing and thereby gain some sort of enlightenment?
缺点：容易饱和（输入过大或过小时梯度接近0，导致梯度消失）