英语翻译爷爷年轻时常去城里干建筑活赚钱养家.有一天下班回家的路上他听到有人呼救,顺着声音他看到一名落水儿童,于是爷爷救出

Grandpa used to work in construction sites in city to make money in order to support the family.One day when he got off work,he heard someone was calling for help.By following the sound,he saw a child fallen in the water.So he rescued the child.The father of the child wanted to give some money to show gratitude.