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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Put some tea in a galipot when the water is boiling on the fire.

当水在火上沸腾时，将茶倒入锅中。

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A pot of water was boiling on a gas fire.

一壶水在煤气灶上翻滚着。

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That changed a lot when the heat of fire was used for boiling water into steam to drive industry, which became large scale and controlled by a few people with countless labourers and employees, whose smaller scale business had come to be totally outcompeted and had no choice but to accept the working conditions that suited these new tycoons.

FORBES: Cold Fusion and Unintended Consequences

Chris Aram has designed a gadget that automates the boiling process on stovetops, ensuring pots never boil dry or catch fire.

CNN: Sensor keeps cooking on the boil