To spoil the fun, atmosphere, or a pleasant situation; to be a wet blanket.
大家都在开心地聊天，你突然提起那些不愉快的事情，真是有点杀风景。
Everyone was chatting happily, and you suddenly brought up those unpleasant things, which really spoiled the mood.
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To spoil the fun, atmosphere, or a pleasant situation; to be a wet blanket.