149 matches in 16 dictionaries.
Details
natural USA: næ'tʃrʌ·l UK: nætʃrəl
0
natural background radiation USA: næ'tʃrʌ·l bæ'kgraʊ"nd reɪ"diː·eɪ'ʃʌ·n UK: nætʃrəl bækgraʊnd reɪdɪeɪʃn
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