“一粒老鼠屎壞了一鍋粥”的英文怎麼說?

“一粒老鼠屎壞了一鍋粥”的英文怎麼說?

就是a (real) fly in the ointment(油膏;藥膏)

若蒼蠅掉到油膏裡, 便會破壞油膏,因此此句相當於”一粒老鼠屎壞了一鍋粥”,表示”煞風景;美中不足”之意

A: How was the movie?

B: It was OK, but a little kid behind me who kept talking was a real fly in the ointment.