Stf
[医][=serum thymus factor]血清胸腺因子
🗣️ 情景例句
He believes it'll bring good luck to all the Stewart babies.
他相信这手套会给Stewart家所有的婴儿带来好运。
It was quite good. But it was awfully long.
班机很好，就是时间太长了。
His boss might get angry with him.
他的老板也许会生他的气。