Place the saucepan over moderate heat until the cider is very hot but not boiling.

将炖锅置于中火上，直到把苹果酒煮热，但不要煮沸。

《柯林斯英汉双解大词典》

Now the ruler Shen Nong was boiling water over an open fire, some leaves from a tea plant fell into the water.

当时，神农氏正在明火上烧水，有些茶叶掉进了水里。

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Despite widespread claims that China's economy is overheating, actually India's shows more signs of boiling over.

虽然外界普遍认为中国经济过热，但实际上有更多迹象表明，印度经济正在沸腾。

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