There are many problems to solve.
有许多问题要解决。
With so many problems to solve, I feel quite at a loss.
有这么多问题要解决，我不知所措。
Today though our world is very different, and we still have many problems to solve.
尽管我们今天的世界已经有了很大的不同，我们依然有许多需要解决的问题。
Today though our world is very different, and we still have many problems to solve.
尽管我们今天的世界已经有了很大的不同，我们依然有许多需要解决的问题。
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