Does this mean Solr treats all terms to be synonyms,
so that it equals this one line?
If you search for the word "bar" that is in both lines the answer is yes. You can confirm this via the Analysis screen by looking at output for the SynonymsGraphFilter
But if you search for the word "foo" (that only shows in one line) then only the synonyms "bar", and "goo" will be used.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…