饼干和脆饼干是用化学方法发酵的。
也许只是饭后的一点糖果，或者一包脆饼干。
Maybe it's a little bit of sweets after dinner or a bag of pretzels.
这些零食每包的价格比您买的一大包乳酪薄脆饼干或炸薯条要贵得“离谱”。
The price "per unit" cost of these items is significantly more than if you had just bought one big box of cheese crackers or bag of chips.
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