Use a picture for your central idea.

用一张图片来表达你的中心思想。

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A theme is a central idea running throughout the text, connecting the characters and events.

主题是贯穿文本的中心思想，将人物和事件联系起来。

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Each play has a theme or central idea which the playwright hopes to get across through dialogue and action.

每个剧目都有一个主题或中心思想，剧作家希望通过对话和行为让人们理解这些主题或思想。

youdao

This idea is central to much of Edith Wharton's best writing.

VOA: special.2010.10.24

And the central idea is that there is one proper response to God's mighty acts on behalf of Israel, and that is resolute observance of the book of the Torah of Moses, without intermingling with the peoples that remain.

其中心思想是没有恰当的回应,对于上帝代表以色列的无上举动，还有对摩西五经的绝对遵守，不可与你们中间所剩下的这些国民搀杂。

耶鲁公开课 - 旧约导论课程节选

So this is the central idea of calculus, right?

这是微积分的核心思想,对吗

耶鲁公开课 - 基础物理课程节选

The central idea is that when reading a story, you replace yourself as the main character.

FORBES: New Study Says We Take on the Traits of Our Favorite Fictional Characters

O'Connor says that over the years, a central idea in his music was growing.

NPR: Mark O'Connor's Symphonic America

" The central idea is to create a reserve currency "that is disconnected from individual nations.

CENTERFORSECURITYPOLICY: Will Brazil and China abandon the dollar?