Since email was the first killer app for the web, it's used for everything.

因为email是第一个杀手级互联网应用，它被用在各种地方，但我们现在已经拥有更好的方式实现信息的传递。

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Breast cancer is the first killer which seriously harmful to the womens health. It has a very high mortality.

乳腺癌是严重危害妇女健康的头号杀手，死亡率很高。

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Backgroud: Cancer is becoming first killer of human life and health, and one of the world's largest public health problems in the new century;

研究背景：肿瘤正成为新世纪人类生命健康的第一杀手和全球最大的公共卫生问题之一。

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Entrepreneurs like Sunil Mittal and industrialists like the Ambanis, among others, introduced this device with its first killer-app: voice communication.

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Mosaic, the first browser, was the killer app for the World Wide Web.

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Here is the first warning to a horse killer from the FDA for falsified EID and the horse was positive for bute.

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