Mesolithic
n. 中石器时代(旧石器时代与新石器时代之间的时代)
🗣️ 情景例句
She complained, with reason, that she had been underpaid.
她抱怨她的工资一直很低，这也不无道理。
Could you help me find my baggage?
请你帮我找我的行李好吗？
In the tree there is a bird.
树上有一只鸟。