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ray [rays]▼(beam of light or radiation)noun[UK: reɪ] [US: ˈreɪ]
shaft [shafts]▼noun[UK: ʃɑːft] [US: ˈʃæft]
X-ray▼(short wavelength electromagnetic radiation)noun[UK: ˈeks reɪ] [US: ˈeks.ˌre]
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