1、ancestry
血統;祖先;
The origin of vertebrates and their ancestry are problems still obscured by too few facts.
脊椎動物的起源和它們的始祖問題,由于事實太少仍然不很清楚 。
2、tribal
部落的;部族的;
Human beings are all gregarious, both tribal and racial.
在部落和種族之間人類生命都是群居的 。
This old so-called tribal nobility disappeared for the most part during the migrations or soon afterwards.
這種古代的所謂部落貴族,大多數在民族大遷徙中或在它以后不久便消滅了 。