步履维艰: walk with difficulty -- said of an aged person; a little too heavy for one's feet to carry; be difficult to go on foot; be very hard to walk; have difficulty in walking; hard to move one's
长途跋涉: a long journey to be made on foot; a long and arduous journey; a long and hard journey; a long trek; make a long journey on foot; trek a long way; trudgeover a long distance 短语和例子这些骆驼在沙漠里长