返回列表[PrimeGrid] 世界地球日竞赛（the Earth Day Challenge）...
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the earth day challenge
地球日挑战
以上为机器翻译结果，长、整句建议使用 人工翻译 。
That's why, as we get ready to celebrate the 40th anniversary of Earth Day, I want to leave you with a challenge.
这就是为什么，当我们准备庆祝地球日40周年时，我想给你们一个挑战。
youdao
Two years later, at the first Earth Day, its founder predicted that the greatest challenge to the environment would be population growth.
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