Dgf
[医][=duct growth factor]导管发育因子
🗣️ 情景例句
I have been learning English for three years now.
我学英语有3年了。
Got all in a panic.
惊恐万分。
The big clock which used to strike the hours day and night was damaged many years ago and has been silent ever since.
教堂的钟很大，以前不分昼夜打点报时，但很多年前遭到毁坏，从此便无声无息了。