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1.Learning by doing, experimenting and seeing should be at the heart of all physics, chemistry and biology lessons.
at the heart of在……中心
Mitigation,or emissions reduction,will be at the heart of the deal.
移民或减少排放将是要要讨论的中心议题。
2.The Durham University team found the opposite; that there was little hands-on, practical work taking place in Britain’s schools.
take place发生，举行
Elections will now take place on November the twenty-fifth.
选举现定于11月25号举行。
3.We suspect that the current national approach to science in primary schools is not impacting on children’s scientific thought and curiosity as much as is possible.
impact on影响
Such schemes mean little unless they impact on people.
这些计划没什么意义，除非它们对人民产生影响。
