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词汇
carbon-14
释义
carbon-14
COCA⁸⁵⁶⁴⁹BNC⁶¹⁶⁵⁴
基本
英英
n.
碳14
名词 carbon 14:
a radioactive isotope of carbon
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keep … peace
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keep…postedinformed,advised
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keep…to a minimum
keep…together
keep …to oneself
keep … to oneself
keep…to oneself
keep …to yourself
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