1. He voiced his solidarity with the weak and defenseless. 他表示自己站在弱势无助群体一边。
2. Cases such as this demonstrate that even diseases that are not normally fatal can have devastating consequences when they strike an immunologically defenseless community. 这样的案例表明，即使是通常不致命的疾病，当它们袭击一个免疫防御能力不强的社区时，也会造成毁灭性的后果。
3. What your association is backing is a program which would allow the middle and upper classes to acquire a bomb while poor people will be left defenseless with just handguns. 你的协会所支持的的项目，允许中上层阶级持有炸弹，而穷人除了手枪则手无寸铁。
4. So what your association is backing is a program which would allow the middle and upper classes to acquire a bomb while poor people will be left defenseless with just handguns. 所以你的协会支持的是一个允许中上层阶级持有炸弹，而穷人除了手枪则手无寸铁的项目。
5. Virgin-soil epidemics are those in which the populations at risk have had no previous contact with the diseases that strike them and are therefore immunologically almost defenseless. 处女地流行病指的是那些风险人群以前没有接触过袭击他们的疾病，因此在免疫上几乎毫无防御能力的疾病。
