2-- I'm sorry, but they aren't on sale today. 
 
1-- Well, look at the ad. The ad says they're on sale.
 
2-- Yes, the ad says that the other brand of batteries is on sale.
 
1-- Oh, yes. I misread the ad.
 
2-- Believe me, you're not the first person to make that mistake today.
 
1-- No wonder people make a mistake. The price is in big letters, and the brand is in tiny letters.
 
2-- You're right. You have to read an ad two or three times sometimes.
 
1-- Yes, you have to be careful with every ad you read.
 
2-- It's okay. I'll go get you the batteries that are on sale.
 
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注解：

1.brand品牌  
2.misread看错了    
3.ad广告   

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译文：
 
1--这是我头次见到正在打折的电池。
2--抱歉，但是这些电池今天不打折。 
1--嗯，看这些广告，上面说打折的啊。
2--是的，这些广告说的是另一个牌子的。
1--哦，是的，我看错了。
2--相信我，今天你不是第一个看错广告的人。
1--难怪人们都会看错。广告上价格是大写的，而电池的牌子是小写的。
2--你是对的。你应该再仔细看看。
1--是啊，是应该仔细地看好广告上的每一个字。
2--好的。我给你拿些正在打折的电池吧。