psf 词性 缩写词 基本解释 pounds per square foot 磅[平方英尺 网络释义 Python规范文件（Python Standard File） 例证 PSF is a text file that contains guidelines and conventions for writing Python code. 同首字母单词 p [pi:] pa [pɑː] paal [pɑːl] paba pablum ['pæbləm] pabouche [pɑː'buːʃ] pabulum ['pæbjʊləm] pabx pac [pæk] paca ['pækə] pacchionian pace [peɪs]