Pmi
abbr. 采购经理人指数（Purchase Management Index）
🗣️ 情景例句
Do you still live there?
你现在还住那儿吗？
When is the most convenient time for you?
你在什么时间最方便呢？
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
看来人类早就致力于探索四季变迁了，比人们想像的要早20，000年。