[usu. in sing.]an action of moving downwards, dropping, or falling 下降,下落 the plane had gone into a steep descent. 飞机陡然下降。 ■a downward slope, especially a path or track 坡道 a steep, badly eroded descent. 陡峭而且已被严重侵蚀的坡道。 ■a moral, social, or psychological decline into a specified undesirable state 没落; 堕落 the ancient empire's slow descent into barbarism. 古代帝国慢慢没落至野蛮状态的过程。
[mass noun]the origin or background of a person in terms of family or nationality 血统,家世,门第 most of the settlers were of Cornish descent. 大多数移民都来自康沃尔地方。 ■the transmission of qualities, property, or privileges by inheritance 世袭;遗传
(descent on)a sudden violent attack 突袭 a descent on the Channel ports. 突袭英吉利海峡诸港。 ■an unexpected visit, especially an unwelcome one 突然来到,突然访问
语源
Middle English: from Old French descente, from descendre 'to descend' (see descend)