free gold bullion basis

例句：

1. 1.The company's decision to reduce its gold reserves is based on the free gold bullion basis.
   该公司决定减少其黄金储备是基于自由金基础。
2. 2. The government has set a new policy based on the free gold bullion basis.
   政府根据自由金基础制定了一项新政策。
3. 3.The company's strategy was based on the free gold bullion basis, which allowed them to invest more in exploration and mining.
   公司的战略规划基于自由金基础，这使得他们能够更多地投资于勘探和开采。