jégkorszaknoun
    1. glacial period
      USA: gleɪ'ʃʌ·l pɪ'riː·ʌ·d UK: gleɪsɪəl pɪərɪəd
    1. glacial epoch
      USA: gleɪ'ʃʌ·l iː'pʌ·k UK: gleɪsɪəl iːpɔk
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