Dgf
[医][=duct growth factor]导管发育因子
🗣️ 情景例句
You know something, Ellen?
知道一件事吗， Ellen？
It's a shame this restaurant is so expensive.
太遗憾了，这家餐馆太贵了。
His cake is four times as big as mine.
他的蛋糕是我的四倍大。