Oper
abbr. 古波斯语（等于O. Per.）
🗣️ 情景例句
Everybody help yourselves.
大家请便吧。
The plans are not even made yet.
这计划还不曾有人策划过。
It did not take the firefighters long to put out the fire, and they at once started to look for causes of the fire.
消防队员没花多时间就把大火扑灭了，他们马上开始调查火灾发生的原因。