a chemical substance that reduces another substance by losing electrons or oxygen while being oxidized itself; reductant

(chemistry) The chemical process where a substance loses oxygen or an atom gains electrons; the opposite of [[氧化作用|氧化作用|yang3 hua4 zuo4 yong4]].

(music notation) a symbol placed before a note to cancel a previous sharp or flat

milk that is produced by adding water back into powdered milk or milk concentrate

The middle part of a flame where gas is not fully burned and carbon particles are separated, producing bright light and a strong chemical reducing effect. It is also known as [[内焰|內焰|nei4 yan4]]

to set the record straight; to clarify the facts; to restore the truth of a situation

any enzyme that catalyzes a reduction reaction

Liquid milk made by adding water to milk powder or concentrated milk; primarily used in Taiwan. Also known in mainland China as [[复原乳|復原乳|fu4 yuan2 ru3]] or [[还原奶|還原奶|huan2 yuan2 nai3]].