所有的杂质都会留在滤纸上，而三氯化金则可以顺利通过滤纸。
The filter will retain all the impurities, leaving only a gold (III) chloride solution.
现在我们要做的就是把所有的东西再过滤一遍。所有的杂质都会留在滤纸上，而三氯化金则可以顺利通过滤纸。
Now, all we need to do is filter everything once again. The filter will retain all the impurities, leaving only a gold (III) chloride solution.
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