tenacity: 堅持，頑固；固執
resilience: 有彈性的；能復原的；有復原力的；適應性強的
This rubber ball is very resilient and immediately springs back into shape.
tenacity: 堅持，頑固；固執
resilience: 有彈性的；能復原的；有復原力的；適應性強的
This rubber ball is very resilient and immediately springs back into shape.
