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
We need a stable political environment in which to develop our economy.
我们需要一个稳定政治环境来发展经济。
Education for women has improved in leaps and bounds.
妇女教育十分迅速地得到了改善。
and you can be sure that none of our five advisers would have suggested sinking all(or perhaps any) of your money into Periwigs.
可以相信5位经纪人中不会有人建议你把全部（或一部分）资金投入佩里威格斯公司。