trade的名词形式商人是trader，trader中文意思是n. 交易者商人商船

When he started the project in 2010， he had just lost his job as a bond trader in Chicago and decided to shift to a completely new career.当他在2010年开始这个项目时，他刚刚失去了在芝加哥做债券交易员的工作并决定转向一个全新的职业。