Keystone state
na. 宾夕法尼亚州的浑名\\n
🧩 词语组成解析
keystone
[['ki:stəun]]
n. 拱顶石, 楔石, 重点
🗣️ 情景例句
h-t-e-r-c-z-e-p-e-s.
h-t-e-r-c-z-e-p-e-s。
He seems very serious, but in fact he has a delightful sense of humor.
他看上去很严肃，其实很诙谐。
Thank you very much.
太感谢了。