antecedents造句
        ...a Frenchman with Irish 
antecedents.
祖先为爱尔兰人的法国人
His mechanical calculating engines were the 
antecedents of the modern computer.
他的机械计算机是现代电子计算机的雏形.
But its political 
antecedents are Scandinavian. Its citizens call themselves Manxmen.
其祖先政治上归属斯堪的那维亚,其人民自称马恩克斯人.
No one knew the 
antecedents of the mysterious stranger.
谁也不知道那个神秘陌生人的身世.
We shall first look briefly at the historical 
antecedents of this theory.
我们首先应大致看一下该理论在历史上的前身。