纯真笑声
Pure laughter
以上为机器翻译结果，长、整句建议使用 人工翻译 。
为什么纯真的童谣和小孩子欢乐的笑声，只需稍稍换个环境，就会变为世上最令人毛骨悚然的声音呢？
What is it about the simple songs of our youth and joyful giggling of children that, with only a slight twist in context, become the creepiest, most demonic sounds in the universe?
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