Circulus
[医] 环, 圈
🗣️ 情景例句
I see. May I have your driver's license?
我明白了，请拿出你的驾驶执照好吗？
There is nothing to thank me for.
没有什么可谢我的。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，