Calcium-45
[化] 放射性钙; 钙45
🧩 词语组成解析
forty-five; [电影]魔鬼交锋.45
🗣️ 情景例句
I'm writing a story for the high-school paper.
我正在为高中校刊写一篇东西。
Where (or While) there is life there is hope.
留得青山在，不怕没柴烧。
What will be the population of these countries in the year 2000?
2000年不太发达国家的人口将是多少？