Unenlightened and undirected, I can do so little.但若得不到启蒙和指导，我就差不多无能为力了。A circ is an undirected graph having only vertices of even nonzero degree.一广义圈是一无向图,其顶点次数都是非零偶数.To determine a given undirected network whether it is...
Don't come bleating to me every time something goes wrong.不要一有问题就跑来向我哭诉。They are always bleating about "unfair" foreign competition.他们总是抱怨“不公平的”外国竞争。It's no good bleating on about it, you ought to do something ...
A new type of ecological floating bed was developed that combined hydrophyte, aquatic animal and biofilm.研究开发了一种由水生植物 、 水生动物及微生物膜构建的组合型浮床生态系统.Hydrophyte A plant found growing in water or in extremely wet areas.水生植物:是生长在水...