一下子的英文：
in a short while
all at once
all of a sudden

参考例句：

The axe sliced through the wood.
斧头一下子把木头劈开了.

The company was precipitated into ruin when the exchange rate dropped.
汇率下降时,公司一下子破了产。

lullaby had the baby into the land of Nod in no time
催眠曲一下子就把婴儿送入了睡乡。

I opened the cupboard door and then stood in front of it petrified.
我打开柜门，站在柜门前一下子惊呆了。

As the blow still hung impending, I leaped in a trice upon one side
当打击迫在眉睫时，我一下子就跳到了一边。

In the Soviet Union, those who once extolled Stalin to the skies have now in one swoop consigned him to purgatory
苏联过去把斯大林捧得一万丈高的人，现在一下子把他贬到地下九千丈。

The food being good in the communal dining-room, I polished off in half a jiffy a large plateful of beef and noodle
公共食堂饭菜好,我一下子就吃了一大盘牛肉炒面。

He felt he had just been doused in cold water. The barely discernible smile disappeared altogether.
他觉得好像被人泼了盆冷水，隐约可辨的笑容一下子消失了。

It would be very unseemly if the corpses had to put on immortality under the gaze of mere sight-seers
万一游客正在参观的时候，那些木乃伊在他们眼前一下子都进入永生的境界，岂不是很尴尬吗？

No man ever became thoroughly Bad at once
没有一个人是一下子就坏透的

short是什么意思：
adj. 短的，矮的，低的；短暂的，短期的；短缺的；缩写的；简慢无礼的；暴躁的
adv. 突然，唐突地；不足
n. 短裤；短路；缺乏

short cataloging
简化编目

The trouble be that we be short of hand.
困难是我们缺少人手。

The horse stopped short at the fence.
马跑到篱笆处突然停了下来。

all是什么意思：
adj. 一切的，所有的；整个的；各种的
pron. 一切；全部；大家，全体
n. 全部财产；所有一切
adv. 完全地；极其

The policy of burn all,kill all,loot all
三光政策

It is all on the house.
费用全由敝店支付。

(all) in a twitter
(极度) 紧张[兴奋],激动

once是什么意思：
adv. 一次，一回；一度；曾经
conj. 一旦；一…就…
n. 一次；一回

Once is no custom
一次不成例

Do it for this once.
就干这一次吧。

Gordon is at once modest and clever.(at once …and…既..又)
戈登既聪明又谦逊