音标: 英 ['rɪfl] 美 [ˈrɪfəl]
1. Then, emptying the sluices and getting the gold out the bottom of the riffles.
然后 把水渠清空 在浅滩底部开采黄金
2. I mean, we came for 12ft barrelling waves and we've got a sort of gentle riffle at the moment.
我们要拍的是三米多高的巨浪 但眼前只有点点温和的涟漪