fog, reduce visibility severely. 霧, 嚴重降低可見度

An Indian farmer walks in his field enveloped by thick fog near Hisar, India, Friday, Dec. 23, 2016. In the winter months, northern India experiences fog enveloped mornings that reduce visibility severely, often leading to delays and cancellation of trains and flights. (Photo: Altaf Qadri/AP)
Photos of the day — December 23, 2016
https://www.yahoo.com/news/photos-day-december-23-2016-slideshow-wp-222350450/photo-p-neighborhood-karm-al-miasar-photo-222350781.html