smells/ tastes a bit off 有点变质了，有点馊了
house specialty 招牌菜
Waiter：Is anything wrong with your food this evening, Miss?
Linda：Sorry to trouble you, but I don’t think this fish is fresh. It actually tastes a bit off 。
Waiter：Sorry, Miss. I’ll replace it immediately. Can I get you another drink while you wait?
Linda：No, please don’t do that. I’d just like to return it。
Waiter：I’m sorry, Miss, but I’m afraid we can’t do that. But you may order something else instead. I would love to suggest the steak. It’s the house specialty and quite tasty。
Linda：OK, then please bring me the steak medium-rare. Thank you。
Waiter：OK, Miss. I hope you enjoy the rest of your dinner.