具有七个顶点的多面体是稀少的.Polyhedra with seven vertices are rare.在所有共享一对伪顶点的二个分量间建立相邻关系.Establish the adjacency relation among all pairs of components which share a pair of pseudovertices.不要轻视上升到光辉顶点的梯阶.Do not despise the step whic...
I keep a stock of cassette tapes describing various relaxation techniques.我收集了一些介绍各种放松技巧的卡带。She is good at describing things or expressing ideas.她善于描述事物或表达思想.He wrote a reference for him, describing his reliability and t...
I pushed through the crowds and on to the escalator.我挤出人群，踏上了自动扶梯。I don't like escalator — I'll climb the stairs.我不喜欢自动扶梯,我要爬楼梯.You can ride the escalator up but have to descend on foot.你可以搭电梯上去,但要自己走下来....
On an oscilloscope, you can see an electrical current oscillate up and down.在示波器上面你可以看到一股电流上下振动.He seemed to oscillate between very drunk and icy sober.他似乎是在酩酊大醉和完全清醒之间摆来摆去.It is true that system could oscillate back - w...