radioactive

radioactive /,reɪdɪəʊ'æktɪv/

adj.放射性的

1.Radioactive iodine loses half its strength in a week.

放射性碘在一周內會失去一半威力。

2.Taking potassium iodine tablets before exposure saturates the thyroid with safe iodine andstops its radioactive cousin from permanently lodging in the body.

服用碘化鉀片在癥狀出現之前以甲狀腺吸收安全的碘，進而阻止放射性的碘長期停留在身體內。

3.But radioactive waste is a serious unresolved issue.

但放射性核廢料是一個尚未解決的嚴重問題。

4.Some byproducts of the nuclear fission are themselves radioactive.

有些核裂變產生的副產品自身具有放射性。

5.The phenomenon is called radioactive fallout.

這一現象即稱之為放射性塵降。