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他一方面对未来充满希望，另一方面对未来会发生什么又有点担心。
【正确答案】：On the one hand, he is hopeful/full of hope about the future, but on the other hand, he is a bit worried about what will happen in the future.
【题目解析】：该题考查常用结构on the one hand, on the other hand。