单语范例（未经PONS编辑处理）
Cold karsk will not ignite until the concentration exceeds 60-70%.
en.wikipedia.org It is often served cold as part of an appetizer or snack tray.
en.wikipedia.org Cold type composition, rather than hot metal. 4.
en.wikipedia.org Symptoms are most often exercise-induced, but fasting, a high-fat diet, exposure to cold temperature, or infection (especially febrile illness) can also provoke this metabolic myopathy.
en.wikipedia.org The risk of condensation can be reduced by avoiding cold bridges, using a vapour control layer to keep moisture out of the wall and by ventilating cold cavities.
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