Transcobalamin
运钴胺素蛋白
🗣️ 情景例句
Tell me about your educational background.
告诉我你的学习背景。
Misfortunes come at night.
灾祸常生于不测。
After seven days of this I went to a party.
这样过了7天以后，我去参加一次聚会。