Galactography
乳管造影术
🗣️ 情景例句
Don't mention it. What would you like to drink?
别客气，想喝点什么？
My mother mailed me a parcel.
我妈给我寄了一个包裹。
For a beginner, you're pretty good.
做为一个初学者，你已经做得很好了。