I do not do anything last summer; I just bumaround.
去年夏天我是游手好闲，什么正经事也没做。
2
You exercise in your regular clothes or wear your 10 year old T-shirt and bumaround shorts.
你穿特定的衣服或者穿你10岁时的T恤和超短裤锻炼。
3
This does not mean you have to come in looking like the best man for a wedding but at least avoid the jeans and casual wear you put on to bumaround the house.