This insect is called a caterpillar.

这种昆虫叫做毛毛虫。

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Once ingested by a caterpillar, the crystals dissolve, releasing the virus to infect the insect's cells.

一旦被毛虫摄入，晶体就会溶解，释放出病毒感染昆虫的细胞。

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What goes on in a cocoon as a caterpillar changes into a butterfly remains one of nature's best kept secrets.

当毛毛虫变成蝴蝶的时候，茧里发生了什么仍然是自然界最大的秘密之一。

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Combustion scientist Herman Snyder, who relocated from Wisconsin, had worked at a Caterpillar subsidiary designing gas turbine engines.

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The strip mining machines used in Alberta come from a Caterpillar plant in Decatur, he said.

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"It's like a butterfly going back into the cocoon and becoming a caterpillar again, " he said.

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