sickle cell trait

例句：

1. 1. Hehas a rare genetic condition called sicklecell trait.
   他患有一种罕见的遗传病，叫做镰状细胞症。
2. 2. Thechild's parents were worried about thepossibility of passing on the sickle celltrait to their children.
   这个孩子的父母担心自己可能会将镰状细胞症传给自己的孩子。
3. 3. Scientists are studying theeffects of this disease on people with sickle cell trait.
   科学家们正在研究这种疾病对有镰状细胞症的人的影响。