演讲者对发现作了简洁的总结。

The speaker provided a concise ___summary of the findings.

报告以关键成果的执行摘要开始。

The report starts with an executive ___summary of the key outcomes.

为更好理解，总是在讲座前阅读章节摘要。

Always read the chapter ___summary before the lecture for better understanding.