A stroke that lands above the center of a ball, as in golf or tennis, giving it a forwardspin.
上部击球是击在球中心以上的抽球，从而使球向前旋转，这种手法常用在高尔夫或网球中。
2
Based on the model which was put forward by SANCHEZ, the stochastic resonance phenomena in the field-driven and spin-like model on Small-World network with directed links were investigated.
基于SANCHEZ提出的有向的小世界类自旋网络模型，研究了引入周期性磁场驱动后所引起的相变特征。
3
If you were able to look down on a tango dance floor, you'd see dancers move as if floating down a river-flowing smoothly forward sometimes and occasionally stopping for a spin in a shallow eddy.