Ichthylepidin
鱼鳞硬蛋白
🗣️ 情景例句
How long does it take you to get through a letter?
你写一封信要花多少时间？
what's his native language?
他的母语是什么？
I bought two expensive dictionaries here half and hour ago, but I forgot to take them with me.
半小时以前我在这里买了两本很贵的辞典，但是我忘了拿走。