to convert the kinetic energy of the water flow into mechanical energy
Examples (Wiktionary)
Mandarin
一切过程都有始有终，一切过程都转化为它们的对立物。
一切過程都有始有終，一切過程都轉化為它們的對立物。
yī qiè guò chéng dōu yǒu shǐ yǒu zhōng ， yī qiè guò chéng dōu zhuǎn huà wéi tā men de duì lì wù ．
All processes have a beginning and an end, all processes transform themselves into their opposites.
Mandarin
中国的穷国地位和在国际上无权的地位也会起变化，穷国将变为富国，无权将变为有权——向相反的方向转化。
中國的窮國地位和在國際上無權的地位也會起變化，窮國將變為富國，無權將變為有權——向相反的方向轉化。
zhōng guó de qióng guó dì wèi hé zài guó jì shàng wú quán de dì wèi yě huì qǐ biàn huà ， qióng guó jiāng biàn wéi fù guó ， wú quán jiāng biàn wéi yǒu quán — xiàng xiāng fǎn de fāng xiàng zhuǎn huà ．
China's position as a poor country denied its rights in international affairs will also be changed – the poor country will change into a rich one, the country denied its rights into one enjoying them – a transformation of things into their opposites.