即刻地

Three jumps at the training speed are considered sufficient preparation for jumps from planes moving at combat speed. At the order "prepare to jump" the static-line swivel ring is attached firmly to the proper place in the fuselage. With everything in readiness, the command "stand by for the jump" is communicated by three successive buzzer signals, each of 1-second duration.

在发出&准备跳伞&的口令后，伞兵们要把固定开伞索上的搭扣牢固地挂在机身内部预定的位置，在一切就位后，三声连续的蜂鸣（每声持续1秒）表示&即刻跳伞&。

HIS FIRST FEEDBACK WAS TO JUMP OFF THE RAIL WHEN HE SAW THE TRAIN BUMBLING TO HIM, BUT HIS LEGS REFUSED TO MOVE.

看见火车轰隆隆地向他开去，他即刻作出的反应就是要跳离铁轨，但他的双腿却不听使唤。

The speed with which the damper falls back on the string to stop its vibrations results from the speed with which the finger abandons the key; that is, if we raise the finger abruptly, the damper drops abruptly and stops the sound instantaneously.

制音器依靠弦来终止它振动的速度，就会产生一个手指离开键盘的速度；也就是，如果我们突然抬起手指，制音器就会突然地落下使得声音即刻停止。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。