hand-down-literature传世文献
hand -me-down旧的
hand-me-down送的东西;别人用过的东西;传给我的
hand-me-down hand-me-downs旧衣
Two-hand-no-tie-down actuation with zero-force buttons双手轻触按钮
PHRASAL VERB（动词词组） If you hand down something such as knowledge, a possession, or a skill, you give or leave it to people who belong to a younger generation. 把…传给 (年轻一代)
The idea of handing down his knowledge from generation to generation is important to McLean.
对麦克莱恩来说，将自己的知识一代代传下去这一信念很重要。