1ADV [oft ADV before v]從那裏;由此Thence means from a particular place, especially when you are giving directions about how to get somewhere. 從那裏;由此 [formal, old-fashioned]
I ran straight up to Columbia County, then turned East, came down the Harlem Valley and thence home.
我一直跑到哥倫比亞縣,然後向東轉,沿着哈勒姆山谷,從那裏回到家。
The mosaics were sent to Munich, and thence to Geneva.
那些馬賽克被送到慕尼黑,從那裏又送到日内瓦。
2ADV [oft ADV before v]然後,接着(指狀態的變化)Thence is used to say that something changes from one state or condition to another. 然後,接着(指狀態的變化) [formal, old-fashioned]
...the conversion of sunlight into heat and thence into electricity.