rainbow or bridge 是彩虹还是 桥？

mama told Crystal once .. 

but still can't remember the color sequence.

妈妈有次讲过彩虹颜色顺序,但是晶晶还没完全记得.

but then, Crystal confirmed that these were bridges, not rainbow.

后来晶晶说这画的是一座桥，不是彩虹。