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
OK, Philip. This is your third cup of coffee.
好啦 Philip。这是你第三杯咖啡了。
The post office is in the middle of the block, You can't miss it.
那邮局就在街区的中间，很好找。
The pictures are on the wall.
画挂在墙上。