Ectotrophous
外口式的
🗣️ 情景例句
He's always been a real playboy.
他就是个花花公子。
How much is a call to the United states?
打一个电话到美国去需要多少钱？
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。