碳14法
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carbon 14 method
以上为机器翻译结果，长、整句建议使用 人工翻译 。
After 11-12 kilo years, this method of dating becomes almost useless as most of the carbon-14 has decayed to the more stable carbon-12.
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The ease to locate Carbon-14 that would respond to decay currently has put the reliability of radiometric dating method into question.
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