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The glass liner of the vacuum flask seems to be broken, the boiling water will get cold quickly.
水壶的内胆好像是坏了，开水放进去凉得很快。
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Place the flask in boiling water for an hour. then examine its contents.
请将烧瓶置于沸腾的热水中一小时，然后观察烧瓶内的反应物。
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