For English, e.g. grammar, vaocabulary, usage, pronunciation (and Maths) - Radiier
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文字工具：
●Test Me: Multiple-Choice-English-Chinese-Translation Game(?) Or Exercise
●Type texts and make a mind map automatically. 打字製腦圖
●用簡體中文／英文製作PDF (generate a PDF file with English and Simplified Chinese)
●用繁體中文／正體中文／英文製作PDF (generate a PDF file with English and Traditional Chinese)

數字工具：
用現值、目標值、增長率，計算所需時間 (find the time with the present value, target value and rate of return)
●每月加入同一數額(the same amount added monthly)
●一筆過 (a lump sum)

●隨機產生數字(generate a random number)

●計算_次方根(take the nth root of a number)

●華氏、攝氏溫度換算(Convert temperatures to and from Fahrenheit or Celsius (Centigrade) )

Mind Map Application
(with automatic text-to-mind-map features)（加入特點，令文字篇章自動變腦圖）

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