Pre-op
abbr. preoperation 空转, 试运转; preoperational 试运转的
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
观测所\\n[计] 操作, 运算, 算符
🗣️ 情景例句
which has been vacant for over a year now,
已空了一年多，
What shall I send him for his the New Year?
我要送他什么东西作为新年礼物？
What is it? asked the man.
“什么事？”楼上人问。