He found himself springing forward on his toes, and his body was leaning in that direction . 他发觉自己在用脚尖向前跳跃，身体也朝那个方向前倾。
It was a beautiful, cloudless day, warm and balmy, the sun sparkling on blue, filtered water . 这是睛空万里，风和日丽的天气，太阳光在湛蓝的游泳池水面上跳跃着。
When a particle is dislodged from the surface it moves downstream by suspension, surface creep, or saltation . 颗粒脱离表面后，以悬浮，爬行或跳跃形式向下游运移。
Grains moving in saltation receive most of their forward momentum directly from the pressure of the wind . 在跳跃运动中的颗粒直接接受来自风压力的大部分向前的动量。
A sharp tool, or bit, was hung from a rope and jerked up and down by men jumping on a spring-board . 粗绳子上挂着锐利的工具，即钻头，由踏板上跳跃的人把它拉起又放下。
The differences between surface creep and saltation are gradual and it is difficult to draw a fixed dividing line . 表面爬行和跳跃之间的差别是渐变的，它很难划一条固定分界线。
These high mobilities are attributed to a special jumping mechanism that operates in addition to the usual motion through the solvent . 这种高淌度的原因是，除了一般通过溶剂的运动以外，还有特殊的跳跃机制在起作用。
Even as i spoke on these grave subjects, my eyes would take a glad bit of a run over the prospects, and my heart jump with pride . 甚至当我说着这些严重的问题时，我的眼睛会快活地望着这些景色，我的心因为得意而跳跃着。
After wearing and wasting her palpitating heart with every engine of regret that lonely inexperience could devise, common-sense had illumined her . 她那样一个没有阅历的人，独居孤处，想出种种自悔自恨的方法，折磨、消耗她那颗搏动跳跃的心，这样以后，通常情理又使她心里豁亮起来。
The girl ' s caper cost her a twisted ankle 小女孩的跳跃使她付出脚踝扭伤的代价。
