壹、世代相傳的英文：
hand down/pass on from generation to generation
from generation to generation?
run in the family?
二、例句：
1、母座頭鯨帶著遷徙的記憶世代相傳。
Female humpbacks carry the memories of their migrations from generation to generation.
2、壹個世代相傳的美麗傳說.
Sunbird passes on from generation to generation beautiful fable.
3、優良傳統要世代相傳.
Fine traditions should be passed on from generation to generation.
4、壹項新研究發現，出軌確實可以“世代相傳”，如此。
According to a new study cheating really does run least as far as men are concerned.