Gold exploitation is the backbone industry and main sourceoffinance income for Zhaoyuan and Laizhou cities.
黄金开采业是当地的支柱产业，也是招远、莱州两市财政收入的主要来源。
2
Others have been forced to cut back because of restrictions imposed by their prime brokers, their main sourceoffinance.
对于其他的杠杆投资者，由于作为他们资金主要来源的首选经纪商对他们施加限制，迫使他们也缩小规模。
3
Starting in the 1980s, skill in finance grew in importance, and, as depicted in the news media and the movies, became a more appealing sourceof income.