expression
sorry to trouble you, but ...
A polite, somewhat formal phrase used when asking a favor or making a request that may inconvenience the listener. Often followed by a request or apology.
See also: 大儀
大儀ながら、この書類に目を通していただけませんか。
Sorry to trouble you, but could you look over these documents?
大儀ながら、もう一度ご説明いただけますか。
I'm sorry to bother you, but could you explain it once more?