就在本月，一个国际性的人与动物健康专家小组前往菲律宾，对于首度爆发在猪身上的伊波拉—赖斯顿病毒进行研究。
An international team of human - and animal-health experts is in the Philippines this month, studying the first known outbreak of Ebola-Reston virus in pigs.
50年前，心脏节律器首度试验性使用，以加速跳动过慢的心脏；如今，全球已经有将近400万人使用了这项装置。
Almost four million people worldwide have pacemakers, which were first deployed experimentally 50 years ago to speed hearts that beat too slowly.
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