1. The camera was not invented, but developed by many scientists. ç
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2. The telescope was invented in Greece in the 1660s. æè¿éæ¯17ä¸çºª60年代å¸è
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3. The bicycle was invented in France in the 1860s. èªè¡è½¦æ¯19ä¸çºª60年代æ³å½äººåæçã
4. The umbrella was invented 4000 years ago in China. é¨ä¼æ¯ååå¹´åä¸å½äººåæçã
5. The abacus was invented in China in the Ming Dynasty. ç®çæ¯ä¸å½äººå¨ææåæçã
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