精练

jīngliàn

HSK 7

精练 — jīngliàn

1. to scour; to degum (silk) (textiles)

   丝绸在染色前要先精练处理。 sīchóu zài rǎnsè qián yào xiān jīngliàn chǔlǐ — Silk must be degummed before dyeing.