We have acidity, and we have sourness.

那就是“acidity”和“sourness”。

And sourness has a kind of negative connotation.

“Sourness”有一种负面的含义。

The spices are mixed with lovage seeds and citric acid for a hint of sourness.

加入了复活草籽和柠檬酸可以增添一点酸味。

" There's been a sourness on trade" in Congress, he added.

他补说，国会对“贸易很刻薄”。

And that sourness dominates the flavor because while hydroxide ions can taste bitter or soapy, your tongue isn't as sensitive to them.

尝到酸味是因为虽然氢离子可以是苦的或者是肥皂水味的，但是舌头对这些味道并不敏感。

Bitterness, he said, alerts us to toxins in the food while sourness warns us of spoilage and saltiness signals the presence of some minerals.

他说，苦味提醒我们食物有毒，酸味警告我们食物变质，而咸味表示矿物质的存在。