用unable to establish造句子，“unable to establish”造句

If no peacetime to grammar accurately mastering and persistent aloud, is unable to establish a good language sense.

What percent of people are unable to establish an audio conversation?

Second, the development of the contemporary building materials industry makes the change of traditional"building"concept, the"authenticity"of material has been already unable to establish.

At this time, the development of capitalism in Britain was no faster than that in the Eastern Empire of the Ming Dynasty, and the new aristocracy and the bourgeoisie were unable to establish their own bourgeois state.