Unobtanium
n. 电影《阿凡达》中一种罕见的常温超导体，拥有奇特的磁场
🗣️ 情景例句
I'm Jane. Glad to meet you.
我叫珍妮，很高兴认识你。
One never loses anything by politeness.
有礼貌对自己不会吃亏。
You should look at it yourself.
你应该亲自看看它。