local fallout

基本解释

The fission products are generally dispersed over a large area of the globe unless there is local rainfall resulting in localized fallout.
裂變的産物通常將散佈在地球表麪一片巨大的區域上，除非因爲下雨産生侷部核塵降。
In contrast with air bursts, local fallout can be a hazard over a much larger downwind area than that which is affected by blast and thermal radiation.
和空中爆炸相比，受侷部核塵降影響的順風區域要比沖擊波和熱輻射的影響區域大的多。
Initial nuclear radiation will be a significant hazard with smaller weapons, but the fallout hazard can be ignored as there is essentially no local fallout from an air burst.
相比小型武器，早期核輻射的危害是很嚴重的。但是放射性塵降的危害可被忽略，因爲空中爆炸基本上不會給地麪帶來塵降。