黄金作为货币不过是一个历史事实，并非是由交易学所设想出来的。
That gold is used as money is merely a historical fact and as such cannot be conceived by catallactics.
黄金而非其他物品用以作为货币不过是一个历史事实，因而并非是由市场交易学所设想出来的。
That gold—and not something else—is used as money is merely a historical fact and as such cannot be conceived by catallactics.
黄金而非其他物品用以作为货币不过是一个历史事实，因而并非是由市场交易学所设想出来的。
That gold—and not something else—is used as money is merely a historical fact and as such cannot be conceived by catallactics.
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