But Americans everywhere like to eat corn that expands with a loud noise when heated -- popcorn. It

But Americans everywhere like to eat corn that expands with a loud noise when heated -- popcorn. It is popular at movies. when heated -- popcorn.这个不明白，什么意思，以及它在句中是什么成分

热心网友

popcorn爆米花。corn that expands with a loud noise when heated是爆米花的名词解释。“加热时伴随一声巨响膨胀开的玉米”。when heated是when the corn is heated.做状语。

热心网友

that expands with a loud noise when(it is) heated是corn的定语从句

热心网友

corn that expands with a loud noise when heated-- popcorn玉米加热膨胀时会发出很大的噪音－－就是暴米花that......heated修饰corn，而corn....popcorn做句中的宾语。