维生素缺乏可能导致各种健康问题。

A vitamin ___deficiency can lead to various health issues.

这个婴儿出生时带有染色体缺陷，专家预计她的寿命最多六个月。

The baby was born with a chromosome ___deficiency and the specialists gave her a life expectancy of up to six months.

当前医疗体系存在显著不足。

There is a significant ___deficiency in the current healthcare system.