对于每个主要问题，诸如饥荒、文盲、营养不良、疟疾、艾滋病、干旱等等，也有相应能够承受且已被证明可操作的解决方法。
For every major problem - hunger, illiteracy, malnutrition, malaria, AIDS, drought, and so forth - there are practical solutions that are proven and affordable.