My eyes turned instinctively in the direction and I saw a figure leap with great rapidity behind the trunk of a pine .

我的眼睛本能地向那个方向转去，我看到有一个身影 飞快 地 向松树树干后面跳去。

The soldiers loaded and discharged with great rapidity .

士兵 们 迅速 装子弹 发射。

The operation to be successful had to be carried out with great rapidity .

这个工作要做得好，就必须做 得 快。