Monophyly
单系
🗣️ 情景例句
Happy birthday, Carl.
生日快乐 ，Carl。
Pain past is pleasure.
过去的痛苦即是快乐。
The city at one time must have been prosperous, for it enjoyed a high level of civilization.
这座古城肯定一度很繁荣，因为它曾享有高度的文明，