Thus carbon 14 gradually loses neutrons in the nucleus and becomes the stable form, carbon 12.

因此C14逐渐丢失细胞核的中子并向稳定形式C12转变.

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From C 5 to C 14 , slowly I a good English speaker and a more confident teenager.

从C5到C14, 我的英语能力逐渐提高,并且在与外教们的沟通中建立了更好的自信.

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