Both countries blamed the other for not engaging seriously in diplomacy.
That's certainly part of it, yes. But I think much more importantly, dreaming big is a muscle. You have to exercise it from time to time. Each time I come up with a grand vision and sink dozens to hundreds of hours into it, only to walk away unfinished, I learn a bit more about how to make a dream become real.
。业内人士推荐Line官方版本下载作为进阶阅读
f(x)=(xW1)⊙σ(xW2)，这一点在51吃瓜中也有详细论述
* @param arr 待排序数组