在困难时期，她性格的坚强有目共睹。

In difficult times, her ___strength of character was evident to all.

他依靠内心的力量克服了挑战。

He drew on his inner ___strength to overcome the challenge.

她以非凡的坚韧和沉着应对了这场危机。

She handled the crisis with remarkable ___strength and composure.