biological and chemical attack的用法和樣例：
例句
- You prepare for the possibility of some form of bombing, some form of chemical or biological attack.
你要為轟炸的可能性和生化襲擊的可能性做好應付的準備。 - Second, we must prevent the terrorists and regimes who seek chemical, biological, or nuclear weapons from threatening the United States and the world.
第二，我們必須阻止恐怖分子及支持他們的國家發動威脅美國和全世界的生化襲擊和核襲擊。
