还原

huányuán

HSK 6

还原 — huányuán

1. to restore (something) to its original state; to reconstruct (an event)

   我们需要把这幅画还原到原来的颜色。 wǒmen xūyào bǎ zhèfú huà huányuán dào yuánlái de yánsè — We need to restore this painting to its original colors.

2. reduction (chemistry) — gain of electrons / decrease in oxidation state

   在有机化学中，氢化反应是一种还原。 zài yǒujīhuàxué zhōng qīnghuà fǎnyìng shì yīzhǒng huányuán — In organic chemistry, hydrogenation is a type of reduction.