速度快的英文：
fast
quickly
rapidly
at full tilt
at a high speed

参考例句：

His speed and skill makes other players look flat-footed.
他速度快、技术好,使其它运动员相形见绌.

But speed is not always an advantage in an aeroplane.
但是，速度快不总是飞机的一个优点。

In relatively developed areas such as Jiangsu Province, growth should be faster than the national average.
比如江苏等。发展比较好的地区，就应该比全国平均速度快。

High speed and accuracy of the computer operation improves the efficiency and quality of service processing.
微机操作速度快、准确率高，提高了业务处理的效率和质量。

To work at a gallop
工作速度快.

He likes to travel in planes, because they cover ground quickly.
他喜欢乘飞机旅行，因为飞机速度快。

She drives rather faster than she ought.
她开车的速度比她正常的速度快多了.

His speed and skill makes other players look flat-footed
他速度快、技术好,使其他运动员相形见绌

and I can set a faster pace for myself than they set for a whole schoolroom."
我给自己规定可以比老师为全班学生规定的速度快。”

He's the best left wing we've ever had in the team, quick as lightning and with excellent anticipation.
他是球队中迄今最好的左边锋，不仅速度快，而且具有出色的先发制人的能力。

fast是什么意思：
adj. 快速的；紧的，稳固的；不退色的；骄奢淫逸的
adv. 迅速地；紧紧地；彻底地
v. 禁食，斋戒
n. 禁食（期），斋戒（期）

This is a fast delivery.
这是一个快投球。

You cannot react fast enough to just be a fast follower.
只做一个快速跟进者不能保证反应得足够快。

He runs as fast as Paul.
他跑得和保罗一样快。

quickly是什么意思：
adv. 迅速地；不久；立即

You would be sunburnt quickly on the beach.
在海滨你很快就能晒黑。

This medicine will operate quickly.
这药不久就会见效。

Bad news travels quickly
恶名传千里

rapidly是什么意思：
adv. 飞快地，迅速地，赶紧地

The carriage rolled rapidly onward.
马车急速地行驶着。

The situation had rapidly deteriorated.
局势很快恶化了。

Apples cleared rapidly.
苹果很快就卖光了。