dietary deficiency

例句：

1. 1. Many athletes sufferfrom dietary deficiencies that can affecttheir performance.
   许多运动员患有饮食不足，这会影响他们的表现。
2. 2. The elderly often havedietary deficiencies that require special attention.
   老年人往往有饮食不足，需要特别关注。
3. 3. A balanceddiet is essential for maintaining goodhealth and preventing dietary deficiencies.
   均衡的饮食对于保持健康和预防饮食不足至关重要。