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| 11. | Lively and playful; frisky. |
| 活泼的活泼的、好玩的；活跃的 |
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| 12. | Wise and active |
| 聪明活泼 |
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| 13. | reactive hydrogen atom |
| 活泼氢原子 |
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| 14. | holiday behavior |
| 活泼的行为 |
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| 15. | reactive intermediate |
| 活泼中间体 |
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| 16. | active molecule |
| 活泼分子 |
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| 17. | vivid shapes |
| 造型活泼 |
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| 18. | Helium can provide a protective atmosphere in the production of reactive metals, such as titanium and zirconium. |
| 在活泼金属，如钛和的锆生产中，氦可以提供保护性气氛。 |
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| 19. | lively design |
| 款式活泼 |
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| 20. | a bubbly personality |
| 活泼的个性. |
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