如果你不挑战自己的极限，试图听懂更多的内容，你就不会进步。
If you are not trying to push your limits in terms of how much you understand, you won't improve.
除非你更加努力，否则你在数学学习上就不会取得进步。
You can't make progress in math learning unless you work harder.
当你自学到这一步，你就会发现一些里程碑式的进展，你会比学校的正规教学进步很多，并且你就不会想停下来了。
You will understand more than you ever did in school and you won’t want to stop.
当你自学到这一步，你就会发现一些里程碑式的进展，你会比学校的正规教学进步很多，并且你就不会想停下来了。
You will understand more than you ever did in school and you won’t want to stop.
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