问一段字典上的英文,看不懂了,firmly;completely:Withinafewminutesshewasfastasleep(=sleepingdeeply).Theboatwasstuckfast(=unabletomove)inthemud.Thereisnonounrelatedtofast.Usespeedinconnectionwithvehicles,acti

　　问一段字典上的英文,看不懂了,

　　firmly;completely:Withinafewminutesshewasfastasleep(=sleepingdeeply).Theboatwasstuckfast(=unabletomove)inthemud.

　　Thereisnonounrelatedtofast.Usespeedinconnectionwithvehicles,actions,etc.;quicknessisusedaboutthinking.

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　　把上面的翻译下,最好解释下,有些糊涂.

　　fast没有名词形式。一般在形容车辆或者动作时用speed等，而quickness用来指思维敏捷。

　　........这段能否帮我造个句子呢，我还是有点没会用这里面的说法。fastspeedquickness，帮我造下句子，我能清晰些