Translation

• lit. source is distant and the flow is long (idiom)
• fig. sth goes back to the dim and distant past
• a lot of water has flowed under the bridge since then

Synonyms

• 其味无穷, 发人深省, 发人深醒, 回味无穷, 幽婉, 引人深思, 微言大义, 意味深长, 意犹未尽, 有意思, 深, 深远, 深长, 甚笃, 耐人寻味, 耐人玩味, 覃, 语重心长, 远大, 隽永