We should know that reading various kinds of books is essential to broadening our horizons.
我们应该知道阅读各种图书对开阔我们的视野很重要。
Over the past fifty years, America has led the world in space exploration, broadening humanity's horizons and our understanding of the universe.
过去五十年来，美国在太空探测、扩大人类视野和对宇宙的了解方面居于世界领先地位。
Over the past fifty years, America has led the world in space exploration, broadening humanity's horizons and our understanding of the universe.
过去五十年来，美国在太空探测、扩大人类视野和对宇宙的了解方面居于世界领先地位。
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