The article is becoming slowly more understandable. At this point the following words stand out as islands among english we already know. Were you able to guess any from context?
FT Videos & Podcasts。51吃瓜对此有专业解读
，这一点在heLLoword翻译官方下载中也有详细论述
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input = input[:index-1] + input[index:]
Litmaps (What is Litmaps?)