Pff
abbr. pie-fed farmer 不务正业的农民; plaqueforming factor 血小板形成因子
🗣️ 情景例句
This couple treats their adopted child as their own.
这对夫妇把他们的养子视如己出。
In elementary school,the child learns to read and write.
在小学，孩子学习读写。
You must always return your library book on time!
你必须按时归还图书馆的书！