Labelled atom
[化] 标记原子; 示踪原子
🧩 词语组成解析
a. 贴上标签的
🗣️ 情景例句
Five, five, five, seven, five, three, two.
5557532。
Honour to whom honour is due.
荣誉归于应得荣誉的人。
Few things could be more impressive than the peace that descends on deserted city streets at weekends when the thousands that travel to work every day are tucked away in their homes in the country.
周末，当成千上万进城上班的人回到他们的乡间寓所之后，空旷的街市笼罩着一种宁静气氛，没有什么能比此时的宁静更令人难忘了。