The natural history of the Hawaiian island chain clearly shows the movement of the Pacific plate over a fixed plume.

夏威夷岛链的自然历史清楚地显示了太平洋板块在一个固定的羽流上的运动。

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The rising plume of black smoke could be seen all over Kabul.

那股升起的黑烟整个喀布尔都可以看到。

《柯林斯英汉双解大词典》

The explosion and fire at Chernobyl sent parts of the reactor core high into the atmosphere in a plume that drifted over Ukraine, Belarus, Russia and western Europe.

发生在切尔诺比利的爆炸和大火将反应堆的内核炸到了高空中，陷入气流中并漂浮到乌克兰，白俄罗斯，俄国和西欧地区。

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Their Dornier 288 plane tracked the edge of the plume over East Anglia and the North Sea, and towards the Dutch coastline.

BBC: Flight ban 'not over-reacting' say Wiltshire scientists

Models by the National Oceanographic and Atmospheric Administration project that the plume will head over the Pacific for a few days before gradually dissipating into the sea.

FORBES: Tracking Radioactive Drift from Fukushima Nuclear Plant

The plume moved south and east over the 12-hour period of 0600 UTC to 1800 UTC on March 15.

FORBES: Tracking Radioactive Drift from Fukushima Nuclear Plant