Protolithic
a. 原始石器时代的
🗣️ 情景例句
What is language for?
语言到底是用来干什么的？
I have confidence in myself.
我对自己颇具信心。
Two days alter, Louis Bleriot arrived near Calais with a plane called 'No.XI'.
两天之后，路易斯。布莱里奥驾驶一名为“11号”的飞机来到加来附近。