People who lack promptness have been described as 'time benders'.
缺乏及时性的人被称为“时间扭曲者”。
暗藏杀机
The door swung open with the same promptness as before.
门像以前一样迅速地打开了。
塔中恋人(上)
'Don't criticize me for coming alone, ' she exclaimed with sensitive promptness.
“不要批评我一个人来, ” 她敏感而迅速地喊道。
还乡
Having agreed to keep watch at this hour every night, in case she should require assistance, this promptness proved how strictly he had held to his word.
In everyday use and in kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.