That's the understatement of the year. 这么说未免太轻描淡写了吧

220. Alice, not now.
     艾丽丝 现在不是时候
221. Is there something we should know?
     是不是有什么情况没有告诉我们
222. I drink a bit.
     我有时喝点酒
223. That's the understatement of the year.
     这么说未免太轻描淡写了吧
224. That's enough out of you!
     你给我闭嘴
225. Hey! I'm only here for Mom,
     我只是为了妈妈才来这的
226. to make sure you don't pull any of your usual crap.
     以确保你不会像平常一样又惹什么麻烦事

来自《实习医生格蕾 第一季 第九集 Grey's Anatomy S01E09》第 223 行