Most lasers in use, however, are low power types. They are far from being the death rays of science fiction.

然而，使用中的大多数激光器都是低功率类型的，它们远非科学幻想小说中的死光。

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We had wanted monstrous versions of ourselves with enlarged heads on stalklike necks, merciless polished robots armed with death rays.

NEWYORKER: The Invasion from Outer Space

He was sent home from hospital with some painkillers after X-rays revealed bruised ribs, but bled to death less than 24 hours later from a ruptured spleen.

BBC: Stafford Hospital: The victims