Desertless
a. 无报酬的, 徒劳的；无价值的；不值得的
🗣️ 情景例句
Unbelievable!
真不敢相信！
When would you like to return?
你打算什么时候回来？
Not all sounds made by animals serve as language.
动物发出的声音不都是用作语言交际。