"I was at the butcher's (shop) yesterday" 是英语中表示“昨天我在肉店”的说法。

其中 "butcher's (shop)" 来源于英语中 "butcher" 这个词，它的意思是屠夫，指的是卖肉的人或者卖肉的店。

下面是一些英文例句及其中文翻译：

"I stopped by the butcher's on my way home from work yesterday."
昨天下班回家的路上我在肉店顺路停了一下。

"I picked up some steaks from the butcher's for tonight's dinner."
为了今晚的晚餐，我从肉店买了些牛排。

"Do you want to come with me to the butcher's to get some meat for the barbecue?"
你想不想和我一起去肉店买点肉来烤肉？