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1. impact knowledge

e.g. The main function of schools is to impact knowledge to the next generation. 

2. core subject areas, among..at.., deserve a place, add spice to life,spice N. [U/C]

e.g. The arts are not among core subject areas but they deserve a place in the curriculum, because these subjects can add spice to life.

3. ambiguous adj.= not clear and therefore capable of being understood in more than one way

e.g. The wording of his statement was highly ambiguous.

4. economic outlook, uncertainty about, be unlikely to, a considerable number of                                

e.g.  Because of the uncertainty about the economic outlook, many companies are unlikely to recruit new employees and a considerable number of graduates fail to find employment.