1.
back numbers of `Nature'
过期的《自然》杂志.
2.
Back copy: Out-of-date issue of magazines or periodicals. Also called Back number.
过期刊物:过时的杂志或定期刊物。
3.
C.O.D.: expires in 3 days, returned to sender when expired.
3天过期，过期后将物品返回给发送者。
4.
Package: expires in 30 days, returned to sender when expired.
包袱：30天过期，过期后物品返回发送者。
5.
has an expired Security Certificate.
有过期的安全性证书。
6.
Have you used the Periodical Index before?
你以前用过期刊索引吗？
7.
The book is ten days overdue.
这本书过期10天了。
8.
a decrease in price or value over time.
价格降低或价值过期。
9.
( of an agreement,a document,etc)become no longer valid;expire
（指协议、文件等）失效,过期
10.
in the course of
在...过程中,在...期间
11.
c/d [carried down ]
过次页、结转下期［
12.
the process of growing into a youth.
向青年期过渡的过程。
13.
I had a glorious holiday.
我假期过得很愉快。
14.
She enjoyed herself in the vacation.
她假期过得很愉快。
15.
We had a lovely holiday.
我们假期过得很愉快。
16.
Going Through Pregnancy Alone
一个人渡过怀孕期。
17.
fiBBed to escape Being scolded;
撒谎以期躲过责骂;
18.
Payment is now four days overdue.
付款期已超过四天了。