indomitability

1. His was the student's mind, and behind his ability to learn was the indomitability of his nature and his love for Ruth.
   他具有学者的心灵，在学习能力背后还有他那不屈不挠的天性和他对露丝的爱。

noun

1. the property being difficult or impossible to defeat

   Synonym:    invincibility