Xanthopterin
黄蝶呤, 2-氨基-4, 6-二羟基蝶呤
🗣️ 情景例句
I'll settle for an A in my photography course.
我只要摄影课能得A就满足了。
Do you have a phone book(directory)?
你有电话簿吗？
I'm changing my hotel. I'll drop in and leave the new address.
我就要换一家旅馆了。我会顺便再来一趟，把新地址留下来的。