Operation and maintenance
[化] 使用和维护
🧩 词语组成解析
and
[ənd, ən,ænd]
conj. 和，与;而且;于是，然后;因此;
🗣️ 情景例句
I can't believe it!
我简直不敢相信！
We are delighted with your products and are thinking of placing an order. The size of our order will depend greatly on your price.
我们对你方的产品非常满意，正欲订购。我们定单的大小主要取决于你方的价格。
Mum and Dad were not at home.
爸爸妈妈不在家。