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not really. if you are waiting in a line, or taking public transportation, you can use you smartphone to practice some natural language, but not math which requ
by buzhidao 7y ago
not really. if you are waiting in a line, or taking public transportation, you can use you smartphone to practice some natural language, but not math which requires deep focus.
- deleted 7y ago[deleted]
- deleted 7y ago[deleted]