为了打消设计上的疑虑，五年前Kushner曾在另一位等离子体研究员的实验室中将光秃秃的拇指伸进灭菌等离子体喷口。

Reassured by that design, about five years ago he put his naked thumb into a jet of microbe-destroying plasma at the lab of another plasma researcher.

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那里的哈克贝利山脉(Huckleberry ridge)在210万年前就曾经爆发过——其爆发的强度与多巴火山的爆发相类似——它形成了岛公园里面的火山喷口。

The Huckleberry ridge eruption 2.1 million years ago - which was almost as large as the Toba blast - formed the Island Park caldera.

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