1.underweight adj. 重量不足的 n. 重量不足;不符合要求的重量
Nearly a third of the children were severely underweight.
约有三分之一的孩子曾严重体重过轻 。
2.malnutrition n. 营养失调,营养不良
Infections are more likely in those suffering from malnutrition.
感染更有可能发生在那些营养不良的人身上 。
3.immunization n. 免疫
Health workers spread the word about the benefits of immunization.
医疗工作者宣传关于接种疫苗的好处 。
4.sanitation n. [医] 环境卫生;卫生设备;下水道设施
The location is exceptionally poor, viewed from the sanitation point.
从卫生角度来看, 这个地段非常糟糕 。