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
I am so excited. Mother!
我好兴奋， 妈妈！
What sort of guarantees are there against late delivery?
惩罚延迟发货有什么保证呢？
When can you come around to discuss some details with us?
什么时候可以过来和我们讨论细节呢？