英语翻译
I got your email address from the Internet through my search for a relatively unknown person who will assist me in securing a large sum of amount.
a large sum of amount 中文：一大笔收入，一大笔金钱
就是在Secure这个上面，是担保，还是获得的意思。这么长的定语从句确实翻译起来比较费劲，而且还得符合中国人的习惯。