形容詞 ancestral:

1. inherited or inheritable by established rules (usually legal rules) of descent
   同義詞：hereditary, patrimonial, transmissible
2. of or belonging to or inherited from an ancestor

1. A card game ancestral to bridge, played with a full deck by two teams of two players, in which the last card dealt indicates trump, tricks of four cards are played, and a point is scored for each trick over six won by each team.
   惠斯特牌橋牌的一種原始形式，玩時各由兩位玩手組成的兩方玩一副紙牌，最后所發(fā)的一張牌為王牌，玩時以四張牌為一圈進行，第一圈中各方所贏得的每個點都被算作6分
2. A reversion to a former type or ancestral characteristic.
   返祖恢復到從前的類型或祖先的特征
3. We should study our ancestral achievements.
   我們應該學習祖先的成就。
4. Her ancestral home is China.
   她的祖居是中國。

an.ces.tral

adj.（形容詞）
Of, relating to, or evolved from an ancestor or ancestors.
祖先的：祖先的，與祖先有關的，祖宗傳下的

【引伸】
ances.trally
adv.（副詞）