我父母在香港出差用英语怎么说

"我父母在香港出差"可以用英语表达为 "My parents are on a business trip in Hong Kong"。
其中, "business trip" 是英文中表示出差的常用词汇, 意思是 "a journey made for work or professional reasons."
举例：
My boss is on a business trip to New York.
I have to go on a business trip to Paris next week.
翻译：
我老板在纽约出差。
我下周得去巴黎出差。