灰姑娘 发表于 2025-3-26 21:20:44

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aplomb 发表于 2025-3-27 03:19:37

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cleaver 发表于 2025-3-27 07:22:10

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watertight, 发表于 2025-3-27 11:11:46

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乐章 发表于 2025-3-27 14:25:56

Empire of the Sun,about once every 25 days at its equator, slowing to once every 34 days near its poles. The sunspots astronomers observe on the sun’s surface (the photosphere) consist of a dark central area, called the umbra, surrounded by a lighter penumbral region. Sunspot numbers vary over a cycle of about 11 yea

Calculus 发表于 2025-3-27 20:26:33

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词根词缀法 发表于 2025-3-27 23:37:18

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拱形大桥 发表于 2025-3-28 04:51:42

Measuring the Heavens, star-filled heavens and uncovered a great variety of worlds orbiting those stars. Yet, like all other areas of science, these new discoveries were on the crest of a wave of intellectual enquiry harking back to ancient times and reverberating down the centuries.

古董 发表于 2025-3-28 08:35:19

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Fermentation 发表于 2025-3-28 12:00:47

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