Question

几个英语词组用法及例句

a short interest span
the end of one's rop
capacity crowd
in the middle of doing sth
account for

Answer 1

a short interest span
The total number of shares of a security that have been sold short by customers and securities firms.就是 证券或外汇交易中未补抛空差额, 欠缺的头寸

the end of one's rope(你是不是输错了，应该是rope）
某人忍耐的底线的意思
I am at the end of my rope with this situation.
我受不了这种状况了

capacity crowd 意思是sold out,nothing left，就是 没货了
还有一种意思是 人群最大容量
比如说The capacity crowd of 100,000 people.

in the middle of doing sth在做什么事之间（通常是很重要的时刻）
比如说I'll be in the middle of doing something and the firefox will just stop responding.It's quite annoying.

account for解释，说明
有几个例句给你
How do you account for losing five games in a row?
你如何解释一连输了五场比赛呢?
The disappearance of the papers has never been accounted for.
那些文件丢得莫名其妙。

追问

a short interest span一时的兴趣
capacity crowd坐无虚席
我知道意思但不会用。

追答

a short interest span 的确有两种意思，第二种就如你所讲
那么给你例句吧，参照一下
He has been always addicted in new stuffs,however those are merely for a shot interest span.
他总是凭暂时的兴趣喜欢上新事物

capacity crowd 这里人一般用在census（人口调查）之中用到，所以理所当然地翻作 人口最大容量，这里就是北美。
像你说的 座无虚席，可能吧，因为英语这个东西有很多种译法的
无论如何，i'll make a sentence up for you

The concert coming up will be in a capacity crowd.
音乐会将会座无虚席的