travel on official business meaning in English

因公出差旅费

It was summer vacation , the daddy traveled on official business , mama went to work ever day , only left over nine year - old xiaoxiao at home , she felt quit bored
放暑假了，爸爸出差了，妈妈每天上班，家里只剩下九岁的晓晓一个人，她感觉好无聊。
Applicable scope : 1st , motorcycle , vehicles and so on bicycle protection 2nd , countryside farm cattle or other domestic animals protections 3rd , the travel travels on official business the travel bag or other goods protections which carries
1摩托车，自行车等车辆的防护2农村耕牛或其它家畜的防护3旅行出差携带的旅行包或其它物品防护