Actinide series
[机] 锕系元素
🧩 词语组成解析
n. [化]锕类
🗣️ 情景例句
Scene: Tom and his wife have invited Carl and David for dinner.
场景：汤姆和他夫人邀请卡尔和大卫吃晚饭。
When the storm broke, I was doing the ironing.
当火起来的时候，我在烫衣服。
I'm not sure I can do it.
恐怕这事我干不了。