That is where the potash deposits are.

那里有钾盐矿藏。

Now, that water dissolves the potash salt, so we get a briny solution down here.

现在，这些水溶解了钾盐，所以我们在这里得到了一种咸溶液。

Took it home and boiled it in potash, Eph used to say; and there it is, just as good as it was thirty years ago.

常说，拿回家用钾盐煮了，你，和三十年前一样好。

And it wasn't just the silver salts in solution, all kinds of stuff: gold and potassium and copper salts, and, most notably, sodium salts are dissolved as water rushes across the landscape.

是溶液中的银盐， 还有各种各样的东西：金盐、钾盐和铜盐，最值得注意的是， 当水冲过大地时， 钠盐就会溶解。

Our tongues are so acutely sensitive to these that companies trying to lower the sodium content of their foods this way actually have to use a mix of regular salt and potassium salt so it's less noticeable.

我们的舌头对这些非常敏感，以至于试图以这种方式降低食物钠含量的公司其实必须要使用普通盐和钾盐的混合物，这样它就那么明显了。