(power of) understanding; comprehensive faculty
彼は理解力に優れる学生だ。
He is a student with excellent comprehension.
社員の理解力を高める研修が行われた。
A training program was conducted to improve employees' comprehension.
読解の理解力が高いため、彼は難しい本も読める。
Because his reading comprehension is high, he can read difficult books.