奉陪到底fèng péi dào dǐ

have the honour of keeping sb company until the end;take sb on and fight to the finish
❍ 你们如果要打，我们一定～。If you want to attack us,we’ll certainly oblige you and fight to the finish.
❍ 这次登山远足，我一定奉陪阁下到底。On this mountaineering excursion,I’ll keep you company until the very end.

奉陪到底

keep sb company till the very end;fight to the (bitter) end;stick out for the game
假如…一味往中国身上泼脏水，中方只能～。If… keeps slandering China,we have no choice but to go as far as…is ready to go./他们一定要打，我们就～。If they insist on attacking us,we’ll take them on and fight to the finish.

奉陪到底fènɡ péi dào dǐ

奉：这里作敬语。比喻陪到最后。keep sb. company to the end, take on sb. to the end, oblige sb. and fight to the finish