lanthanide
n
(chemistry 化) any of the 15 elements in the lanthanide series, with atomic numbers from 57 (lanthanum) to 71 (lutetium) 镧系元素中之任何一种(从原子序数为57的镧到71的镥).
🗣️ 情景例句
Keep cool.
保持冷静。
There is honour among thieves.
盗亦有道。
After I had given her some money, she looked into a crystal ball and said: 'A relation of yours is coming to see you.