Stf
[医][=serum thymus factor]血清胸腺因子
🗣️ 情景例句
It was love at first sight.
那是一见钟情。
You need to transfer at central station.
你必须在中央车站换车。
the main complicating facts of human life must remain unintelligible.
我们才能明白人类生活中主要的复杂现象。