They are our great-great-great-great-great-great -- continue that for about 7,000 times -- grandparents, and so that means we literally all are biological cousins as well, and estimates vary, but probably the farthest cousin you have on Earth is about a 50th cousin.
他们是你们的曾曾曾曾.......祖父母 大概有 7千代的曾祖父母， 这也意味着我们也是 生物学上的表亲， 预测可能有出入，但是很可能 你在地球上 最远房的表亲有大约 50 个。