concentrate on造句
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 plans to
concentrate on six core businesses.
该集团打算主营6种业务。