oil deterioration

• 油品变质,油的老化

oil deterioration的用法和样例：

例句

1. Designers suggest dry cleaning your wool suits only twice a year to reduce deterioration of the fibers.
   设计师建议羊毛套装一年只能干洗两次，这样可以减轻纤维的老化程度。
2. The deterioration in air quality is a huge preoccupation here.
   空气质量恶化是香港人们的一个大关注。