空头的英文：
nominal; short-seller

参考例句：

Squeeze the shorts
(交易所)杀空头

An armchair theorist deficient in practical experience
缺乏实际经验的空头理论家

In his rigorously honest and orderly mind he probably had contempt for mere politicians
他心地至诚而严守纪律，瞧不起空头政治家。

Speculate on a rise [fall]
做多头[空头]投机，赌涨[跌]

Bear market: A prolonged period of falling prices.
熊市，空头市场:长期跌价期间的证券市场。

Stocks are traded between the bull and the bear.
股票就是这样在多头和空头之间交易的。

"Oh, Mei-ching, about government bonds, of course! Is he bull after all, or is he a bear ?
“哎！ 阿眉，就是那公债哟！ 他到底是做的‘多头’呢，还是‘空头’？——

nominal是什么意思：
adj. 名义上的；微不足道的；票面上的
n. 名词性词

nominal addendum
标称齿顶高

He is nominated as police chief.
他被任命为警察局局长。

The charge of the box lunch was nominal.
午餐饭盒收费很少。

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。

seller是什么意思：
n. 卖方；销售者，销售商；商品

The boy is a flower seller.
那个小男孩是卖花的。

The seller reduced the price for cash down.
那销售者对现款交易的顾客减价优待。