基本解释

英汉例句

Approximately 5% of the world’s population carries trait genes for haemoglobin disorders, mainly, sickle-cell disease and thalassaemia.
世界人口近5%携带血红蛋白疾患的特征基因，血红蛋白疾患主要包括镰状细胞病和地中海贫血。
Sickle-cell disease and severe forms of thalassaemia (thalassaemia major) can occur only when both parents are carriers of trait genes for the particular condition.
只有当父母双方都携带特定疾病的特征基因时，才有可能发生镰状细胞病和严重的地中海贫血(重型地中海贫血)。