They will concentrate on teaching the basics of reading, writing and arithmetic.他们将集中教授阅读、写作和算术基础知识。They should concentrate on rejuvenating the existing vegetation, like grass and shrubs.他们应该侧重于修整现有的绿化植被，比如草和灌木。The group...
I gave her a lift back out to her house.我让她搭我的便车回家。Once you've given your word, don't try to back out.一旦许下诺言, 就不要想翻悔.We drove into a dead end and had to back out.我们把车子开进了一条死胡同,只得退出来....
多角形的边界可以延伸到无穷远处.Boundaries of the polygon may extend to infinity.颗粒呈简单的多角形.The grains take on simple polygonal.这些名建筑是以圆形和多角形为基础而设计建造.These famous buildings are based on circles and polygons....
Cathay Pacific flies daily non-stop to Hong Kong from Heathrow.国泰航空公司每天都有从希思罗机场直飞香港的航班。Cathay Pacific's hiring British pilots at a high salary.国泰航高薪聘用英国飞行员.Of course, there is a combination of both, as Cathay Pacifi...