Carbon 14
[化学]碳—14（放射性碳）
🧩 词语组成解析
fourteen
🗣️ 情景例句
The advanced class is nonstop.
高级课程， 是没有休息的。
A full cup must be carried steadily.
杯满盈，须持稳。
No matter how hard I tried, it was impossible to fill this beautiful pen with ink and to this day it has never written a single world!
然而不管我如何摆弄，那枝漂亮的钢笔就是吸不进墨水来。直到今天，那枝笔连一个字也没写过！