1、"No shrewd user" of a biological weapon "is going to give you that opportunity," he warned.
“沒有一個精明的生物武器使用者會給你那個機會，”他警告說。

2、Since 911, fears of shoulder-fired missile2 and biological weapon attacks have increased.
自911事件以來，對于肩射飛彈及生物武器等攻擊行動的恐懼不斷增高。

3、A biological weapon could infect millions of people with a deadly disease.
生物武器可以讓數(shù)百萬人感染致命疾病。