The third chapter emphasizes the feature and social function of "instant theme" oil painting, to further supplement the necessity of its existence.

第三章重点分析了“即时性主题”油画的特征意义和社会功能，从而进一步补充说明了这一表现形式存在的必要性。

youdao

The first part is a theoretical statement of administrative discretion act, mainly about the concept and basic features of it a well as the necessity of its existence.

第一部分，行政自由裁量行为理论概述。 主要论述了行政自由裁量行为的概念，存在的必要性及其基本特点。

youdao

Can't remember which famous person once said such a sentence: the existence of a thing, must have its rationality and necessity. Cleaning liquid is also such a reason.

记不清哪位名人曾经说过这么一句话：一件事物的存在，必然有它的合理性和必要性。清洁液也是这样的道理。

youdao

Some of the arguments he traces are familiar, from various attempts to prove the logical necessity of the existence of god to speculations among more adventurous physicists that the universe got its start as a kind of lucky quantum burp.

ECONOMIST: The question of existence