Both black freemen and slaves were renowned for their craftsmanship in such trades as bricklaying , iron grillwork , and carpentry .

黑人中的自由人和奴隶因他们在砌砖、铁花格、木工等行业中的精湛工艺而闻名。

Iron grillwork , designs for which were created locally and executed to a high perfection by slave craftsmen , decorates these balconies and also supports the roof .

铁花格，最初由本地杰出的奴隶工匠完美的设计并铸造出来，装饰着阳台的同时也支撑着屋顶。