| 单词 | mildly radioactive |
| 释义 | mildly radioactive They were impregnated with a mildly radioactive compound: customers inserted the cheque into the machine then typed in a six-digit code. Times, Sunday Times The larger crystals are possibly mildly radioactive and give off both heat and light as a byproduct of their nature. Retrieved from Wikipedia CC BY-SA 3.0 The luminous dial or betalight contained the mildly radioactive element tritium, which later caused some concern about safety. Retrieved from Wikipedia CC BY-SA 3.0 |
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