chiefly Brit a cylindrical container with a vacuum between an inner and an outer wall, usu of silvered glass, used to keep material, esp liquids, either hot or cold for considerable periods
| 单词 | vacuum flask |
| 释义 | vacuum flasknounchiefly Brit a cylindrical container with a vacuum between an inner and an outer wall, usu of silvered glass, used to keep material, esp liquids, either hot or cold for considerable periods |
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