n.不屈不挠；毅力；坚韧不拔
He took the palm by perseverance. 他靠不屈不挠的精神获胜。
He is slow to learn, but shows great perseverance. 他学得慢，但是他表现出不屈不挠的毅力。
By perseverance the lame boy learned to swim. 靠毅力这跛童学会了游泳。
He became a champion at last in virtue of his perseverance. 凭着坚韧不拔的精神，他终于成为冠军。
perseverance的基本意思是“坚持不懈，不屈不挠”，指的是一种锲而不舍的精神，是不可数名词。
perseverance后可接at（接名词）或in（接动名词）引起的介词短语表示“在某方面的坚持不懈”，也可接动词不定式表示“坚持不懈做某事”。
