If you refer to a cascade of something, you mean that there is a large amount of it.
例句
The women have lustrous cascades of black hair...那些女子擁有瀑布般烏黑亮澤的秀發。A cascade of mail arrived from friends.朋友寄來的郵件如雪片一般。
N-COUNT
瀑布
A cascade is a waterfall.
VERB
(水)飛流直下，傾瀉而下
If water cascades somewhere, it pours or flows downwards very fast and in large quantities.
例句
She hung on as the freezing, rushing water cascaded past her...她抓得緊緊的，任憑冰冷湍急的水流從她身上傾瀉而下。A waterfall cascades down the cliff from the hills behind.一處瀑布從身后山崖上飛流直下。
VERB
垂落;懸掛
If one thing cascades over another, it falls or hangs over it.
例句
Vivid red and pink geraniums cascade over my balcony...鮮艷的紅色和粉色的天竺葵從我家的陽臺上直掛下去。From her tiny waist a crinolined skirt cascaded in three deep tiers.裙架撐起的三層大裥裙從她的纖腰上款款垂下。