النظريات

In a sentence

• قدمت الطالبة شرائح عرض عن النظريات الفيزيائية.

  The student presented slides about physical theories.

  Here, 'النظريات' is used to refer to established scientific ideas or principles in a specific field, physics in this case.

• الكُتَّاب والأدباء غالبًا ما يبتكرون النظريات في أساليب التعبير.

  Writers and authors often innovate theories about styles of expression.

  In this context, 'النظريات' refers to new or creative ideas regarding a particular subject, here related to literary styles.

• تحتاج النظريات العلمية دائمًا إلى تجارب لإثباتها.

  Scientific theories always need experiments to be validated.

  Here, 'النظريات' represents systematically formulated explanations or models aimed to understand some particular aspects, explicitly scientific theories.