it wasn't until the following year however that the first 'talkie',as they were called then,was made.
问题描述：
it wasn't until the following year however that the first 'talkie',as they were called then,was made.
其中"as they were called then"不清楚结构,是不是还有词组什么的,
答
这是定语从句 正如当时所称呼的那样
还原they were called talkie then