碍难遵命

Explanation: Obstacle: impede; compliance: compliance. As has been obstructed, difficult to comply with the order or orders 　　Usage: For the predicate; politely refused, then the other requirements 　　Source: Caidong Fan "Romance of the Republic of the popular" 64 back: "Defence is tight, with insufficient troops, duty location, find it difficult to obey." 　　Examples: I am afraid I ~ Thesaurus:  Find it difficult to obey