For a long time, we assumed that all whales that had teeth including sperm whales and killer whales were closely related to one another.

在很长一段时间里，我们认为所有有牙齿的鲸鱼，包括抹香鲸和虎鲸，彼此都是密切相关的。

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And the large Numbers infected within a short time make pandemics disruptive, even when the virus itself is not an efficient killer.

大部分感染人群在很短时间内会使得流行性疾病发生变异，甚至病毒本身就不是一个有效杀手。

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Surreptitiously I took a photograph, but it didn't seem the right time to confront him. I wondered if he might still be a killer.

我暗中拍了一张照片，现在看来还不是对付他的时候，我想他也许仍然是一个杀手。

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The FAA bill is basically on the floor as a time-killer while the Senate is waiting for the House to send a continuing resolution.

FORBES: 1099 Form Reporting Repeal? -- Not So Fast -- And Not The Whole Enchilada

"I'm a better husband and father than I was a killer, " he told Time.

CNN: STORY HIGHLIGHTS

But even later when my magazine reading went on line, for years in DC my go-to time-killer was to spend some time in a Borders flipping through graphic novels or books.

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