Radioactive constant
[医] 放射性常数
🧩 词语组成解析
🗣️ 情景例句
Don't waste your school years, son, they can determine your future.
孩子，别荒废你的学业，它们对你的未来有决定作用。
Discontent is the first step in progress.
不知足是前进中的第一步。
The lady who is standing behind the counter.
站在柜台后面的那位女士。