وعلى

In a sentence

• الطالب استعد للامتحان وأجاد فيه، وعلى ذلك حصل على درجات ممتازة.

  The student prepared for the exam and performed well, and because of that, he received excellent marks.

  Here, 'وعلى' introduces a repercussion or consequence in the explanation.

• اختار المتسابق السرعة العالية مع المخاطرة، وعلى مسئولية نفسه قاد المركبة.

  The contestant chose high speed with risk, and at his own responsibility, he drove the vehicle.

  In this case, 'وعلى' connects and emphasizes responsibility tied to an action.

• الشاعر كتب قصيدته بإحساس مرهف وعلى مستوى أدبي رفيع.

  The poet wrote his poem with a delicate feeling and at a high literary level.

  Here, 'وعلى' introduces an additional description or attribute related to the stated action.