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。
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。
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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