Actinide series
[机] 锕系元素
🧩 词语组成解析
n. [化]锕类
🗣️ 情景例句
My brother is a junk food addict.
我兄弟就爱吃垃圾食品。
All our work was in vain.
我们白干了一场。
That's about the best we can do on that.
那差不多是我们所能开出的最低价了。