完全是的英文：
nothing less than
nothing short of

参考例句：

It's an utter mystery.
这完全是个谜。

It was all a publicity stunt.
这完全是个宣传噱头。

Pardon my French, they are complete garbage.
原谅我的粗俗，它们完全是垃圾。

This regiment was entirely composed of mercenary troops.
这个团完全是由雇佣兵组成的。

In this area arable farming is a hazardous practice
在这个地区，可耕种的作物完全是碰运气的。

It was all an amazing naval deployment.
这完全是一种令人惊异的海军部署。

The entire proposal is risible, it will never be accepted.
这个建议完全是荒唐可笑的，根本不可能采纳。

It is a mere coincidence that they see eye to eye on this point.
他们在这一点上见解一致完全是巧合。

Such promises of cleaning up on the part of the bourgeois politicians are all preelection rhetoric
资产阶级政客们这类实行改革的诺言，完全是为谋

The newspaper's account of the so-called reshuffle of the financial ministry was a complete fiction.
报纸对所谓的财政部人事改组的报导完全是捏造的。

nothing是什么意思：
pron. 没有什么，无关紧要
n. 不关紧要之事

Sow nothing; reap nothing
不播种,无收获

There is nothing to be ashamed of
没有什么见不得人的事

They lacked for nothing.
他们什么都不缺少。

less是什么意思：
adj. 较小的,较少的
adv. 较小地，较少地；不如
n. 更少的数（量，额）
prep. 减去；扣除；差...

Men are less arrogant, women less choice.
男人不那么趾高气扬了，女人也不那么挑三拣四了。

As the years went on he opposed her less and less.
随着岁月的流逝，他对她的反抗越来越少。

I could do no less.
这是我起码要做的。

than是什么意思：
conj. 比，比较；与其...（宁愿...）；除了...（之外）；当，就
prep. 超过

It will be better than you think for.
情况将比你预料的好。

This was more than bathroom banter.
这可不仅仅是浴室中开玩笑的话而已。

Faith is stronger than reason.
宗教信仰比推理劝说更具威力.