Retinal
a. 视网膜的\\n[化] 视黄醛
🗣️ 情景例句
I don't know.
我不知道。
My brother is twice as tall as your sister.
我弟弟比你妹妹高一倍。
They have to work hard to support their family.
他们必须努力工作来支持他们的家。