考研英语长难句（115）非限定性定语从句

Many consumers seem to have been influenced by stock-market swings, which investors now view as a necessary ingredient to a sustained boom.

主干：Many consumers seem to have been influenced

非限定性定语从句：which investors now view as a necessary ingredient to a sustained boom. 修饰 stock-market swings。

翻译：尽管很多消费者似乎一直受到股票市场波动的影响，投资者却把这种波动看作持续繁荣必不可少的一个因素。