Debris thrown into the atmosphere by an asteroid collision would presumably contain large amounts of iridium, and atmospheric currents would carry this material all over the globe.
小行星碰撞后的碎片可能会含有大量的铱，而大气洋流会把这些物质带到全球各地。
2
It can carry out high speed and high efficiency processing quenching material that the rigidity is over 60hrc.
能进行硬度超过60hrc的淬火材料的高速、高效率加工。
3
A coronal mass ejection can carry a billion tons of solar material into space at over a million kilometres per hour.