Abstrusity
n. 难解, 深奥
🗣️ 情景例句
I told you.
我告诉过你了。
Don't forget to print airmail on the letter.
不要忘记在信封上印上航空邮件
What a lovely place! I'm going to go across the river.
真是个好地方！我要到河那边去。