Question

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「20年以上たったが、多くの人が様々な病気に苦しんでいる。」を
"It"s been more than 20 years,but many people are suffering from a variety of diseases"と英語になおしたのですが、おかしなところがあれば教えてください！

ちなみに解答は、
•“It has been more than 20 years but a lot of people suffer from various diseases.”
•”More than 20 years have passed,yet there are a lot of people suffering from many kinds of diseases.”
です。