This is the 615th most frequent Persian word.
بتواند
"Can" or "be able to" (third-person singular subjunctive form).
بتواند is used here to indicate the capability or feasibility of gaining experience.
او تلاش میکند که این کار را انجام دهد تا بتواند تجربه کسب کند.
He is trying to do this work to be able to gain experience.
بتواند is illustrating the necessity of being capable of enduring hardships for success.
اگر بخواهد موفق شود، باید بتواند سختیها را تحمل کند.
If he wishes to succeed, he must be able to endure hardships.
بتواند is used here to express the aim of achieving success in exams.