laparoscopy
发表于 2025-3-30 09:50:56
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继而发生
发表于 2025-3-30 12:44:11
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G-spot
发表于 2025-3-30 20:01:16
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泥瓦匠
发表于 2025-3-30 22:46:04
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intuition
发表于 2025-3-31 01:58:15
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habitat
发表于 2025-3-31 06:25:09
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国家明智
发表于 2025-3-31 13:10:50
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变态
发表于 2025-3-31 16:16:51
Jürgen Janssen,Wilfried Laatz that geometry should be studied at school. At ?rst, the study of geometry is experimental. Results are taught and used in numerous examples. Only later do proofs come into play. But are these proofs truly necessary, or can we do without them? A natural answer is that every statement must be provide
大量杀死
发表于 2025-3-31 18:53:52
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小卒
发表于 2025-3-31 21:52:23
Jürgen Janssen,Wilfried LaatzPythagorean theorem)Nature and the world around us that we ourselves design, furnish, and build contain many geometric patterns and structures. This is one of the reasons that geometry should be studied at school. At ?rst, the study of geometry is experimental. Results are taught and used in numerou