求翻译：李明带狗散步，孩子们在湖边玩，一个孩子落水，李明跳入湖中，李明奋不顾身下去救人，湖水太深，李明费力的将孩子推到岸边，但自己体力透之，沉入水中，再没有上来，人死不能复生，李明被追为见义勇为，是什么意思？

Li Ming takes his dog for a walk, kids playing in the Lake, a child drowning, Li Ming, plunged into the Lake, Li Ming, selfless rescue, water is too deep, Li Ming laborious children pushed to shore, but his physical strength, sinking into the water, then no, that dead dieback, Li ming was ready,