Alloxanthin
[化] 双阿脲; 双四氧嘧啶
🗣️ 情景例句
The little boy held his mother's hand firmly when crossing the street.
那小男孩过马路时紧抓着母亲的手。
To scream for his breakfast
想吃早餐而大喊大叫。
I've got an idea.
我有个办法。