字面意思是“在某人的游行礼上降雨”。形容在别人兴致勃勃、感到自豪或开心的时候，说出或做出一些令人丧气的事情。

• I hate to rain on your parade, but the event has been canceled. ^{我不想扫你的兴，但活动已经取消了。}
• She was so excited about her new car until he rained on her parade by mentioning the cost. ^{她对新车兴奋不已，直到他提到开销给她泼了盆冷水。}
• Don’t rain on my parade; I’m really proud of my achievement. ^{别给我泼冷水；我真的为自己的成就感到自豪。}