Optg
abbr. operating 操作的，运转的，营业上的
🗣️ 情景例句
I'd love to, Philip, but I'm afraid I can't.
我很想， Philip ，但是恐怕不行。
I feel terrible, but I've just broken your ashtray.
真是很抱歉，我刚才打破了你的烟灰缸。
It has been found that certain bats emit squeaks and by receiving the echoes,
人们发现，某些蝙蝠能发出尖叫声，