一些环保组织认为，人类会理解地球日的真正意义，并尽最大努力保护地球。
Some environmental protection groups believe that humans will understand the true spirit of Earth Day and try their best to protect the earth.
一些环保组织认为，人类会理解地球日的真正意义，并尽最大努力保护地球。
Some environmental protection groups believe that humans will understand the true spirit of Earth Day and try their best to protect the earth.
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