Stf
[医][=serum thymus factor]血清胸腺因子
🗣️ 情景例句
Dad, your famous apple pie.
爸爸，你最着名的苹果派。
Who am I supposed to see?
我应该去见谁？
good-tempered elephant who will give many years of loyal service.
脾气温顺、能忠实为人服务多年的大象。