It urged more action to reduce particulate matter that damages lungs.

它敦促采取更多行动来减少损害肺部的颗粒物。

Scientists have also found that people with Bipolar Disorder have reduced grey matter in various parts of their brains.

科学家还发现，双相情感障碍患者大脑各个部位的灰质减少。

I look at her carefully manicured nails and stylish suit and think that no matter how sophisticated she is, becoming a mother will reduce her to the primitive level of a bear protecting her cub.

我打量着她精修细剪的指甲和时尚前卫的衣服，心里想到，不管她打扮多么考究，做了母亲后，她会变得像护崽的母熊那样原始而不修边幅。