日经指数跌至今年最低点: the nikkei index fell to a record low for the year
起源: 1.(根源) origin; beginning; derivation; rise in 短语和例子生命之起源 the origination of life; 生物的起源 the origin of living things; 文明的起源 the origin(s) of civilization; 没有记载的起源 unrecorded beginnings; 希腊文