"at intervals" meaning in English

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      "args": {},
      "expansion": "at intervals",
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  "lang_code": "en",
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        {
          "ref": "1922, E[ric] R[ücker] Eddison, The Worm Ouroboros, London: Jonathan Cape, page 5:",
          "text": "His face was beautiful to look upon, and softly coloured like a girl’s face, and his expression one of gentle melancholy, mixed with some disdain; but fiery glints awoke at intervals in his eyes, and the lines of swift determination hovered round the mouth below his curled moustachios.",
          "type": "quote"
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      ],
      "glosses": [
        "now and again; intermittently"
      ],
      "id": "en-at_intervals-en-prep_phrase-fJwVwQrQ",
      "links": [
        [
          "now and again",
          "now and again"
        ],
        [
          "intermittently",
          "intermittently"
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      "translations": [
        {
          "code": "el",
          "lang": "Greek",
          "roman": "katá diastímata",
          "sense": "now and again",
          "word": "κατά διαστήματα"
        }
      ]
    }
  ],
  "word": "at intervals"
}

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          "text": "His face was beautiful to look upon, and softly coloured like a girl’s face, and his expression one of gentle melancholy, mixed with some disdain; but fiery glints awoke at intervals in his eyes, and the lines of swift determination hovered round the mouth below his curled moustachios.",
          "type": "quote"
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      ],
      "glosses": [
        "now and again; intermittently"
      ],
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          "now and again",
          "now and again"
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          "intermittently",
          "intermittently"
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  "translations": [
    {
      "code": "el",
      "lang": "Greek",
      "roman": "katá diastímata",
      "sense": "now and again",
      "word": "κατά διαστήματα"
    }
  ],
  "word": "at intervals"
}