英语中speed 和 velocity 有什么区别的?

我在别处找的,你看看speed [spi:d]n。速度,速率Our speed averaged out at 50 km an hour。我们的平均速度是每小时50公里。快速,迅速Everyone was surprised by the speed with which the dispute was settled。每个人都为这一争端解决得如此之快而感到吃惊。vt。& vi。急行; 加速He sped his car through the street。他开车飞速地穿过街道。vi。超速行驶Was I really speeding,officer?警官,我真的超速行驶了吗?用法词典 speed 来自古英语 sped >同义词：velocity swiftness fastness speeding amphetamine pep pill upper rush hotfoot hasten hie race accelerate speed up quicken hurry zip简明英汉词典 velocity [viˈlɔsiti]n。速度A bullet goes from this gun with a velocity of 3000 feet per second。此枪射出的子弹,其速度为每秒3000英尺。同义词：quickness speed swiftness