爬行速度的英文：
crawl speed

crawl是什么意思：
v. 爬行，匍匐行进；拍马屁；缓慢行进，艰难前进
n. 爬行，匍匐行进；缓慢行进；自由式游泳

The crawl is considered the speediest.
爬泳最快。

He openly crawled to the boss.
他公开地对老板拍马屁。

The accident scene was crawling with police officers.My flesh crawled in horror.
出事现场到处都是警察。我毛骨悚然

Don't crawl to your boss.
别巴结老板。

Soldiers quietly crawl to advance to enemy.
士兵们悄悄地向敌人匍匐前进。

speed是什么意思：
n. 速度，速率；快速，迅速
v. 迅速前进，快行；促进；加速，使加速

The speed of a train differs greatly from the speed of an airplane
火车的速度与飞机的速度大不相同。

The car is gaining speed.
那辆轿车正在加速。

The worker is timing the speed of the machine.
这名工人正在调整机器的速度。

a dizzy height, speed
使人眩晕的高度、 速度.

Speed the parting guest
祝客人一路顺风