The machine directs a powerful beam at the affected part of the body.

这种机器将很强的射线对准身体感染部位。

《牛津词典》

After 14 months of repairs, the giant machine was restarted on Friday evening and the first beam started circulating in a clockwise direction around the tunnel about 10pm.

经过14个月的修理，这台巨型机器于周五晚上重新启动，晚上10点左右，第一束粒子波开始沿顺时针方向在隧道内环行。

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The researchers used a machine called an "electroretinogram" to test the field of vision - firing a tiny beam of light at the shark in a darkened tank from all directions.

研究人员利用“网膜电图”机测试视野——在一个黑暗的箱子里从各方位向鲨鱼发射一丝微弱的光。

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They placed a sample of each in a machine that shook them about, and focused a laser beam on each sample.

ECONOMIST: How tree frogs keep their grip

External beam radiation involves zapping a patient with high-dose X rays generated by a machine called a linear accelerator.

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