Thorides
[化] 钍系元素
🗣️ 情景例句
I haven't ruled out the possibility.
我还没有排除期可能性。
Don't forget to print airmail on the letter.
不要忘记在信封上印上航空邮件
It's our favourite subject of conversation.
天气是我们最喜欢谈论的话题。