硫代硫酸鈉

sodium hyposulfide / sodium thiosulfate

sulfur (chemistry)

to substitute / to act on behalf of others / to replace / generation / dynasty / age / period / (historical) era / (geological) eon

sulfuric acid H2SO4 / sulfate

sour / tart / sick at heart / grieved / sore / aching / pedantic / impractical / to make sarcastic remarks about sb / an acid

sodium sulfate

sodium (chemistry)