家系的用法和樣例：
例句
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家系從一個(gè)祖先傳下來(lái)的直接世系；家系或家族
Direct descent from an ancestor; lineage or pedigree. -
叔娶嫂制如古希伯來(lái)法律規定的弟弟與寡嫂結婚以維持哥哥的家系的一種風(fēng)俗
The practice of marrying the widow of one's brother to maintain his line, as required by ancient Hebrew law. -
他的家系一直可以追溯到十世紀。
His family can trace its history back to the tenth century.
