live on bread and water meaning in English

靠面包和水生活

I had to live on bread and water when i was a student
我上大学时只能靠粗茶淡饭过活
When he was a student , he lived on bread and water
他当学生的时候，（）每天靠面包和开水活着。
Living on bread and water for days on end , wearing the same clothes over and over again and carrying a heavy bag on their backs while climbing a mountain are all character - building experiences
一连很多天都只靠面包和水撑着，穿着同一身衣服，爬山时还要背着重重的背包，这一切都很锻炼人的性格。