not having enough food to develop or function normally
例句
用作名词 (n.)
His health collapsed from undernourishment. 他的身体因营养不良而垮了。
The living condition in China has improved in general and removed poverty and undernourishment to a great extent. 生活条件在整体上得到了改善,在很大程度上消除了贫穷和营养不良,但保持这种发展势头是国家要面临的一个挑战。