自911事件以来，对于肩射飞弹及生物武器等攻击行动的恐惧不断增高。

Since 911, fears of shoulder-fired missile2 and biological weapon attacks have increased.

youdao

自911事件以来，对于肩射飞弹及生物武器等攻击行动的恐惧不断增高。

Since 911, fears of shoulder-fired missile2 and biological weapon attacks have increased.

youdao