Carbon 14
[化学]碳—14（放射性碳）
🧩 词语组成解析
fourteen
🗣️ 情景例句
Aren't you going to the aerobics class this morning?
今天上午你不是去上有氧运动课吗？
You can't make something out of nothing.
巧妇难为无米之炊。
We need the best possible quality.
我们要尽可能最好的品质。