I can buy stamps at the post office 为什么用at不用in?

you can buy stamps at the post office 翻译 at post office 和in the post office一样吗? i,m mike .i,m at the post office.can you_to the Please go（）the post office and buy some stamps. I arrived at the post office in a harry ________I'd left the Get off at the post office.解释 turn left at the post office是什么意思 I am at/in the office 是用in还是用at ,我在办公室 They want to buy some stamps form the post office 改为一般疑问句 would you buy me some stamps when you past the post office 改 Please buy some stamps for me if you _（pass） the post office You can buy a stamp_____ the post office.