Dgf
[医][=duct growth factor]导管发育因子
🗣️ 情景例句
when the dog scratched on the front door.
当那狗在抓前门时。
Now or never.
机不可失，失不再来。
The smoke from the fire rose and found its way outside and the light danced over the roof of the cave.
缕缕青烟从火中升起，飘出洞外，火光在洞顶上闪耀。