请帮忙翻译成英文，谢谢！

Johannesburg，the biggest city in South Africa and the world's biggest gold producing centre, is known as "the city of gold". The stock change of Johannesburg, which among the world's ten biggest financial markets, is located in the busy zone of the downtown area. It is always busy with trading.

South Africa's biggest city, the center of the world's largest gold Johannesburg known as a "City of Gold". Ten of the world's financial markets to the Johannesburg Stock Exchange is located in the downtown urban lots, the transaction unusually active.

楼上只会复制吗?