Advice doesn't normally come cheap, but this piece is for free...
通常来说,忠告都是价值不菲的,但这个是免费赠送的。。。
As soon as he had hung up, he went over to the workmen and told them that if a policeman ordered them to go away, they were not take him seriously.
挂上电话后,他又马上来到工人那儿,告诉他们若有个警察来让他们走开,不要把他当回事,