... 心里踏实了 feel at easefeel relieved 学习踏实 be very thorough in one 诚实地，老实地 honestly ...
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be very thorough in one
要非常彻底
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Standing before the audience, one shall be lucky to have 70% of his usual aptitude in the face of emergencies. Thorough preparation is very important and the earlier the better.
在全场听众面前，处理能力、机智和反应速度能有平常的70%就非常不错了，关键靠事前的准备。
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