Then updraft wind currents carry the light, positively charged ice crystals up to the top of the cloud.
然后上升气流将轻盈的、带正电荷的冰晶带到云的顶部。
Fallout from a nuclear explosion may be carried by wind currents for hundreds of miles if the right conditions exist.
如果条件存在，核爆产生的放射性尘降物会随风漂移数百英里。
Changes in wind currents can then affect weather around the world.
气流的变化可以影响全球的天气。
But surprise, a lot of that air pollution is coming right back at us, carried by wind currents.
然而更惊人的是，那些大量的空气污染又随着风向直扑回来。
But surprise, a lot of that air pollution is coming right back at us, carried by wind currents.
然而更惊人的是，那些大量的空气污染又随着风向直扑回来。
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