单词：above-treeline
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Moon and Jupiter 月球和木星 After traveling behind the sun for several months, the planet Jupiter is now visible again, just before sunup. Learn how to see Jupiter near the waning moon on Wednesday morning -- on today's Earth and Sky. JB: This is Ea
发表于:2019-01-02 / 阅读(106) / 评论(0)
(科普英语)Earth and Sky
(科普英语)Earth and Sky
Sierra Treeline 山脊树林 Could global warming allow forests to expand into higher elevations than they have reached in more than a thousand years? Learn more about studying alpine treelines -- today on Earth and Sky. JB: This is Earth and Sky. The h
发表于:2019-01-02 / 阅读(110) / 评论(0)
(科普英语)Earth and Sky
(科普英语)Earth and Sky