必需品

Said in one Chinese podcast line.

• 也不再是保存食品的必需品了

  It is no longer a necessity for preserving food.

  

  大盐场和盐博物馆- Salins-les-Bains 镇1 – 引言

The shows belong to their publishers, and each line plays from the publisher’s own file. Translations are machine-made. Chinese books and courses on Amazon (affiliate link).