Some food items, beef steak for instance, come pre-sterilised with ionising radiation, which helps prevent spoilage.

有些食品，例如牛排，是事先经过射消毒，这么做有助于防止食物变质。

Irradiated foods: meat and dairy produce have ionising radiation applied to them before packaging.

照食品：肉类和奶制品在包装前会进行射处理。

These days, however, the main source of ionising radiation for most people is neither fallout from bombs nor radiotherapy; it is dental X-rays.

然而，现今影响大多子射主要源头既不是原子弹射尘埃也不是放射疗法，而是牙科X光。

Ironically, because past research studying the after-effects of exposure to things like atom bombs and radiation treatments for cancer suggests the most important environmental risk factor for meningiomas is ionising radiation.

讽刺是，对体暴露于类似原子弹射和癌症放射疗法后续影响研究显示，产生脑膜瘤最主要环境风险因素是子射。

These are gas-like fluids whose atoms have been ionised by losing some or all of their electrons—as happens to the air, by frictional heating, when an object travels hypersonically through the atmosphere.

这些是类似气体流体， 它们原子因失去部分或全部子而被，就像当物体以超音速穿越大气时， 由于摩擦生热而发生在空气中现象一样。