The resulting standing wave is a swirling motions such as might result if we swirled water in a round-bottomed cup.
所产生的驻波是一种旋转运动,它是在我们转动圆底杯中的水时会产生的现象。
2
Italy, the long-standing defending champions (winners in 1934 and 1938), travelled by boat rather than plane to the 1950 World Cup, a journey of three weeks from Naples to Santos.