Sent_en: 2zh A gathering area for the butterflies northwest of Mexico City was affected particularly hard by severe weather this winter, which killed 50 people in the region.
Sent_yy: 今年冬天，墨西哥城西北部的一个蝴蝶聚集区受到恶劣天气的严重影响，造成该地区50人死亡。