1·So, this is why every aboriginal claims direct descent from one or another of these mythical beings of the "Dream Time".
所以，这就是为什么每个土著人都认为，自己是“梦幻时代”里某个神话人物的后代。
2·Two ways are used to design the network, the one is the direct energy descent method, and the other is the gradient descent method.
有两种方法可以用来设计网络，一是能量下降法，另一个是梯度下降法。