1.
adj. happening once every year
每年的，一年一次的
2.
Come on Lily, this is like a once-in-a-year party.
莉莉，这可是一年一次的聚会。
3.
annual event, meeting, report, show, visit
一年一次的大事、 会议、 报告、 演出、 访问.
4.
Restaurant meals were once-a-year celebrations.
去餐馆吃饭是一年一次的庆典。
5.
Once a year they undergo a short refresher course.
还有一年一次的短期专业进修．
6.
Occurring once every100 years.
百年一次的每一百年发生一次的
7.
a reference book that is published regularly once every year.
一年出版一次的参考书。
8.
Occurring every third year.
每三年的每三年出现一次的，三年一次的
9.
Anyway, there must be another rectification the year after next.
后年是要搞一次的。
10.
There are harvests once, twice and even three times a year, depending on the climate.
随着气候的不同，可以一年收一次，两次甚至三次。
11.
A publication issued once a year.
年刊一年发行一次的刊物
12.
The average rain falls 100 times out of 356 days in Beijing.
北京一年的平均降雨次数为100次。
13.
occurring or payable twice each year.
每半年发生一次的或每半年支付的。
14.
occurring every third year or lasting 3 years.
每三年发生一次的，或持续三年的。
15.
That's very common among young couples.Affections grow stronger after every quarrel.
这也是少年男女间常有的事，吵一次，感情好一次。
16.
For the 2000 decennial census, that will no longer be the case.
10年一次的人口普查又将在2000年举行。
17.
It is essential that the young trees be visited once a year for the first six or eight years.
幼树在最初的6―8年应每年检查一次。
18.
This check-up should be done not just once, but two or three times, a year.
整社不是一年整一次，而是一年整两次至三次。