riffle
/ˈrɪfl; `rɪfl/ v
1 [Tn] shuffle (playing-cards) by holding part of the pack in each hand and releasing cards alternately so that they form one pack again 洗（纸牌）（搀和整理）.
2 (phr v) riffle through sth turn the pages of (a book, etc) quickly and casually 迅速而随意地翻动（书等）的页. riffle, n (US)
1 (stretch of) choppy water in a stream, caused by a rocky shoal or shallow （礁石、 浅滩或浅水处的）急流, 湍流, 湍急流段.
2 shoal or shallow 浅滩; 浅水处.