The angry customer delivered a long diatribe against the poor service in the restaurant.

diatribe 来自希腊语 diatribē，原指"消磨时间"，后演变为"长篇激烈的批评"。这个词由前缀 dia-（表示"贯穿、彻底"）和 tribein（"摩擦、消耗"）组成，现在特指"尖锐刻薄的抨击或谴责"。