Bilin
后色胆素, 胆汁三烯, 三烯胆色素核
🗣️ 情景例句
Then an adult must sign for you.
那就必须有一位成年人来替你签字。
Today is Monday.
今天星期一。
But he has not promised to give you any of his blood.
但是他并没有答应给你他身上的任何一滴血。