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
That's it. That's it.
对了， 就这样。
Did you go to the school last night?
你昨晚去学校了吗？
Isn't there anyone at home?
家里没有人吗？