就像你要想赛跑事先需要练习一样。
If you want to go run a race, for example, you train beforehand.
遇到这种情形，你最好事先温习这方面的知识，练习有关的技能。
Meet the situation, you'd better prior revision this knowledge, practice relevant skills.
遇到这种情形，你最好事先温习这方面的知识，练习有关的技能。
Meet the situation, you'd better prior revision this knowledge, practice relevant skills.
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