Stf
[医][=serum thymus factor]血清胸腺因子
🗣️ 情景例句
Thanks, Mrs. Martinelli.
谢谢 ，Martinelli太太。
It matters not how long we live but how.
问题不是活得多么长，而是活得怎么样。
The most wonderful piece of machinery on show was Nasmyth's steam hammer.
其中最奇妙的是内史密斯的蒸汽锤。