1. The variation present in most non-Africans with cystic fibrosis is responsible for only about 30% of cases in people of African origin.

be responsible for 是造成…的原因

There is a lot of evidence that stress is partly responsible for disease

有很多证据证明压力是造成疾病的原因之一5j]d4ExTBC*mv。

2. This is one reason, along with its relative rarity, that the illness is often missed in black children.

along with 除某物以外;随同…一起，跟…一起

She lost her job when the factory closed, along with hundreds of others.

工厂倒闭时，她和成百上千的其他人一样失去了工作jEH=c%8z5~V;YSjO。