By subtly echoing the theme raised at the beginning, the conclusion can help the audience remember the core content of the speech and understand the purpose and significance of the speech.
By cleverly echoing the theme proposed at the beginning and summarizing at the end, the audience can better remember the core content of the speech and understand its purpose and significance.
By cleverly echoing the theme put forward at the beginning, the conclusion can make the audience remember the core content of the speech more and understand the purpose and significance of the speech.