n. 小瀑布, 瀑布状物

vi. 成瀑布落下

[计] 层叠, 级联

n. a small waterfall or series of small waterfalls

n. a succession of stages or operations or processes or units

v. rush down in big quantities, like a cascade

v. arrange (open windows) on a computer desktop so that they overlap each other, with the title bars visible