What makes it seem real is that in actual languages, letters and groups of letters appear with consistent frequencies, and the language in the Voynich manuscript has patterns you wouldn't find from a random letter generator.

使它看起来真实的是，在实际的语言中，字母和字母组以一致的频率出现，而伏尼契手稿中的语言具有从随机字母生成器中找不到的模式。