radioactivity noun

QUANT. level The soil contains 30 times the acceptable level of radioactivity.

VERB + RADIOACTIVITY discharge, produce, release | measure, monitor

RADIOACTIVITY + VERB be present | escape, leak | contaminate sth The site was found to be contaminated by radioactivity.

RADIOACTIVITY + NOUN levels

You can also check Google Dictionary: radioactivity (English, 中文解释 )

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