The secondary sector takes raw materials and transforms them into manufactured goods.

第二产业获取原材料并将其转化为制成品。

So, someone in the primary sector may extract oil from the earth, but someone in the secondary sector refines the petroleum into gasoline.

因此，第一部门的人可能从地球上提取石油，但第二部门的人将石油提炼成汽油。