集中精力把经济建设搞上去: go all out for economic development集中精力去干一项艰巨的工作: Gather up one's strength for a hard job我累了就无法集中精力工作。: I can't concentrate on my work when I'm tired. 我今天必须集中精力搞装饰.: I must concentrate my energies on decorating today.也许我当时仍是以失望的态度看待这个世界，但不久，我就无法集中精力，对考试全无热情，也看不到从医的前景。: Perhaps I was still looking at the world through jaundiced eyes, but I soon became unable to concentrate, to feel enthusiastic about the exam, or to see any future in the medical profession at all.
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