To earn money by selling vegetables my grandpa, but the ability to walk is not convenient, every day can only ride tricycles a trip to a trip back and forth.

我爷爷靠卖菜赚钱，但是腿脚不方便，每天只能骑着人力三轮车一趟一趟地来回。

youdao

Back and forth I walk next to the barbed wire fence, trying to keep my emaciated body warm.

我沿着铁丝网来回走，想暖和一下我瘦弱的身体。

youdao

Back and forth I walk next to the bared wire fence, trying to keep my tired body warm.

我在铁丝网周围来回走动，希望身体能够获得些许暖意。

youdao

Because consumers must walk back and forth from the computer to the television set to drag and drop files onto the TakeTV, SanDisk Vice President Eric Bone says TakeTV relies on the old-fashioned "SneakerNet"--the tried and true technique of marching across the living room with stored data, an operation that dates back to the days of floppy disks, burnable CDs and DVDs.

FORBES: Digital Dreams: The Connected Living Room