Indespensability
n. 不可少, 必需
🗣️ 情景例句
I'll work on my computer.
我要练电脑。
What's your nationality?Are you American?
你的国籍是什么?你是美国人吗？
they had escaped from the paper bag and had taken complete possession of the hall!
它们从纸袋里逃了出来，爬得满厅都是！