1
have a blood line
常用于描述拥有某种血统。
She has a royal blood line.
她有皇家血统。
血统
先理解核心含义，再看它在真实句子里的用法。
血统
a person's or family's ancestry or lineage
She has a royal blood line.
她有皇家血统。
The royal blood line has continued for many generations.
这条王室血统已经延续了许多代。
Farmers often choose animals with a strong blood line for breeding.
农民通常选择血统优良的动物进行繁殖。
She traced her family's blood line through old records.
她通过旧记录追溯了自己家族的血统。
常用于描述拥有某种血统。
She has a royal blood line.
她有皇家血统。
追溯血统。
He traced his blood line back to the 18th century.
他将自己的血统追溯到了18世纪。
表示通过血统的方式。
The throne passes by blood line.
王位通过血统传承。
Not this
She needs a blood line test.
Use this
She needs a blood type test.
血统（blood line）指家族世系，而非血型（blood type）。此处应为血型测试。
Not this
He has good blood line.
Use this
He has a good blood line.
blood line 是可数名词，当表示一个具体的血统时，前需加冠词 a。
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Dictionary facts from ECDICT.