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 see you're feeling better already, Betty.
我看得出来你已经感觉好些了， Betty。
I'm afraid I can't get away from the meeting.
我恐怕难以从会议中抽身。
If he wants to make any changes,minor alternations can be made then.
如果他有什么意见的话，我们还可以对计划稍加修改。