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細火煮食

在煮沸後只用中間的細芯火，已能提供足夠的火力，無需浪費能源。用電池爐窩特別見效，因為熱力能從中心傳開至整個窩，只是煮沸的時間比普通窩稍稍長了一點。

雖說時間就是金錢，但如何運用是要看人的智慧。若節省的時間只是空花在無價值的事上，倒不如實際的節省一點能源吧。

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