A level of the hydrogen isotope called radioactive tritium will remain in the water.

一种被称为放射性氚的氢同位素会留在水中。

Before being released, the water is filtered to remove isotopes, leaving only tritium, which is difficult to separate.

在排放污水之前，水经过过滤以去除同位素，只留下难以分离的氚。

Tritium is present there in a very, very low concentration.

氚的浓度非常非常低。

They say tritium is not considered harmful in small amounts.

他们表示，少量的氚不被认为是有害的。

A radioactive isotope called tritium will remain in the waste water.

氚这种放射性同位素无法被清除。

Some elements of nuclear bombs, like radioactive tritium becomes stale over time and must be refurbished.

一些核弹的元素，比如放射性氢，会随着时间的流逝而生锈，一定要翻新才能用。

The agency says tritium cannot enter the body through human skin.

该机构表示，氚不能通过人体皮肤进入人体。

Plant operator Tepco said the levels of tritium in the water are weakened to below official limits.

核电站运营商东京电力公司表示，水中的氚含量已降至官方限值以下。

Instead of hydrogen or deuterium, it contains tritium, an isotope of hydrogen that has two neutrons, and is radioactive.

与氢或重氢相比，它还含有氚——氢的一种同位素，含有两个中子，具有放射性。

It turned out that the water contains more than tritium, some more radioactive materials that also in the water.

事实证明，污水中不仅含有氚，还含有一些放射性物质。