Op. cit.
abbr. 前面引用的书(in the work already quoted)
🗣️ 情景例句
Do you have any evidence?
你有什么证据？
Is this toothpaste on sale today?
这支牙膏今天是削价出售的吗？
At least we're safte here, I said.
“起码我们在这里是安全的，”我说。