Cassiopeium
[化]镥(71号元素, 符号Lu)
🔁 扩展释义
【医】 镥(71号元素)
🗣️ 情景例句
I'm surprised they're not here.
我奇怪他们怎么没来。
What is bothering you?
什么在困扰你？
and mechanical systems like a wound watch, or the sun,
像上紧发条的手表那样的机械装置，或太阳，