Petersen's operation
[医] 彼得逊氏手术(高位切石术的改良法)
🧩 词语组成解析
🗣️ 情景例句
And, Carl, you join in at any time.
还有Carl， 你随时都可以加入。
Thank you.
谢谢。
In primitive cultures the obligation to seek and to receive the traditional instruction is binding to all.
在原始文化中，寻求和接受传统教育的义务对全民都有约束力。