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
Our competitor has a better product. There's no denying it.
无可否认，我们的竞争对手拥有更好的产品。
Very likely.
很可能。
There aren't enough candles, said ann. There are only twelve. We'll need one more.
“蜡烛不够呀，”安说，“只有12支。我们还需要一支。”