Perthes' ethods
[医] 佩特兹氏法(连续吸引术)
🗣️ 情景例句
She always reminds him of Grandma. Susan
总是让他想起奶奶。
It's a large town.
这是一个很大的乡镇。
The Bison on the Plains of America
美洲平原上的野牛