防

例句：

1. 1. We must take measures to prevent the spread of the virus.
   我们必须采取措施防止病毒的传播。
2. 2. The child was protected by his mother's loving care.
   这个孩子被他的妈妈温柔的关怀所保护。
3. 3. The soldiers were guarding the border against intruders.
   士兵们在边境守卫以防止入侵者。