Chromotrope
[建] 铬变素, 酸性一号铬变棕
🗣️ 情景例句
Mom,
妈，
I will take a subway.
我将去搭地铁。
He knew I collected match boxes and asked me whether my collection was growing.
他知道我收集火柴盒，于是问我收藏的米柴盒是否在增加。