Lanthanides
高中 Senior High镧族稀土元素, 镧系元素
🗣️ 情景例句
If you've been with someone for this length of time you'll have to ask yourself what reservations have I got?
如果你和某人生活了这么长时间，你得问一下自己，你对这段婚姻满意吗？
Where were we?
我们刚才说到？
I wonder why!
我很想知道为什么。