contribute在一下两种用法中都可以
be contributing to 导致 和 contribute to 有助于，促成
Recent research also suggests that a lack of sleep could be contributing to problems like diabetes and weight gain, both serious health hazards.
最近的研究也表明，缺乏睡眠可能会导致像糖尿病和体重增加的问题，两者都严重危害健康。
I believe that each of us can contribute to the future of the world
我相信我们每一个人都能够对世界的未来有所贡献。
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