有一些人会想要让你难堪，欺负你。There are people who want to humiliate you and grind you down.很多不能或不按规矩行事的小孩常常被人欺负。Many children who can't or don't conform are often bullied.你以为你可以欺负我吗？你不能，永远不能！Do you think you can walk over m...
正交轨线的问题一直处于沉寂状态.The subject of orthogonal trajectories remained dormant.20天的轨线有时辰有用, 可是从15年前开始就走下坡路了.Twenty - day trajectories worked for a whellole, but that started going downhelloll 15 years ago.最后给出了与子午线交定角的轨线方程的解法.F...