服务质量

wǒ men yǐ jīng kàn dào suǒ tí gōng fú wù zhì liàng de xiǎn zhù gǎi shàn

我们已经看到所提供服务质量的显著改善。

We have seen a marked improvement in the quality of service provided.

fú wù zhì liàng de jiàng dī

服务质量的降低

the reduction of service quality