C14
[医] 碳14, 放射性同位素碳(原子量14)
🗣️ 情景例句
I haven't had a minute to relax all day.
我今天连一分钟都没休息。
People do not lack strength; they lack will.
人们不缺力量，缺的是决心。
there is no evidence that the total amount of activity is any less.
但没有迹象表明，其活动总量有任何减少。