表达 to have something in someones blood 或 be in someones blood 的意思是 某人的能力、天分或特质是遗传的，也就是俗话说的 天生的。譬如，一家人当中假如有很多成员都从事一类工作或拥有同一种天分，那就能说这项技能是他们家族遗传的，即 in their blood。

例句

Being a baker1 is in my blood our family has owned a bakery for many generations.

我骨子里就是个糕点师。大家家经营面包房已经好几代了。

Art is in my blood my mother was a painter and her father was a sculptor2.

我的艺术细胞是与生俱来的。我妈妈曾是一名画家，她爸爸曾是一名雕塑家。

People in every generation of Petes family have been football players its in their blood.

彼得家的每一代人都是足球运动员。他们天生就是这块料。