/ˌpɝː.səˈvɪr.əns/
the quality of continuing to try to achieve a particular aim despite difficulties 毅力；韧性；不屈不挠的精神
They showed great perseverance in the face of difficulty.
他们面对困难表现了坚强的毅力。
The only way to improve is through hard work and dogged perseverance.
要更上一层楼，唯一的途径就是艰苦奋斗，不屈不挠。