追溯的

The family has traced its ancestry to the Norman invaders.

这个家族将自己的世系到诺曼征服者。

Bob's book traces his flying career with the RAF.

鲍勃的书了他在英国皇家空军的飞行生涯。

Variant hemoglobins (see sickle-cell anemia;hemoglobinopathy) can be used to trace past human migrations and to study genetic relationships among populations.

异常的血红蛋有助类过去的迁移情况，并有助对群中遗传关系的研究。