Emergency installation
[化] 备用机件; 备用装置
🧩 词语组成解析
installation
['ɪnstə'leʃən]
n. 安装;装置;永久性军事基地;就职;
in 向内，进入 + stall放 + ation名词后缀 → install安装+ation名词后缀 → 安装；装置；设施
🗣️ 情景例句
Are you carrying any items that need to be declared?
你没有携带需要申报的东西吗？
He that once deceived is never suspected.
一次行诈骗，永远遇疑嫌。
I don't know. What about this blue one?
我不清楚，这个蓝的怎么样？