大家都搜：
一年一次或两次
1、a once───一次
2、once a time───有一次
3、once a year───一年一度；一年一次
4、once or twice───一两次；偶尔；一两次， 偶尔
5、a year───年载；1年；一年
6、twice a month───一个月两次
7、twice a day───[医]一天二次
8、twice a week───每周两次；[医]每周二次
9、twice───adv.两次；两倍
1、Change your workspace at least once or twice a year.───一年至少一到两次更换你的工作环境。
2、As a spokesman noted, Yahoo had been reorganizing once or twice a year, 'which has been disruptive.───正如一位发言人所说的，过去雅虎每年都会有一、两次的人事变动，不过这种做FaHui扰乱公司的运营。
3、Keaton comes here once or twice a year to soak up the atmosphere.───基顿每年来这里一两次，感受这里的氛围。
4、We gather as a group once or twice a year, for old times' sake, and get loaded.───为了过去的时光我们每年都会聚一两次，并喝得大醉。
5、Some of my acquaintances in the country come up to town once or twice a year to visit the theatre as a special treat.───我在乡村有一些熟人，他们每年进城来看一回或几回戏，并把此看作一种特殊的享受。
6、His constituencyat South Leeds was being kept warm for him although he was able to visit once or twice a year.───尽管他一年中到南利兹选区访问仅一到二次，但那儿的选举区一直为他保留着。
7、For decades they met once or twice a year, in relative obscurity, to talk over technical issues, exchange gossip and renew old friendships.───几十年来，他们每年聚会一到两次，不怎么高调，谈谈技术问题，交换一下八卦，增进一下友谊。
8、Once or twice a year I teach a case study about PizzaExpress (a restaurant chain I used to run) at London Business School.───每年，我都会在伦敦商学院 (London Business School)讲授一两次有关PizzaExpress（一家我曾经经营过的连锁餐厅）的案例分析。
9、Although they had a warm phone relationship, Ney only saw him once or twice a year, and he wasn't very physically affectionate.───尽管他们经常通过电话联系，Ney每年只见他1-2次，并且很少有身体亲热接触。
1、I have a file cleanout day scheduled in my tickler file or calendar for once or twice a year.
2、Keaton comes here once or twice a year to soak up the atmosphere.
3、I would only use the kitchen appliance once or twice a year if that, and for $300 I couldn't do it.
4、He doubted whether half as many went to confession more than once or twice a year.
5、He is our Cloverleaf U. K. Connection based near Manchester and he has brought through some marvelous channeled messages in group situations. We see him once or twice a year in Kauai or Saskatoon .
6、Once or twice a year there would be a village concert in the schoolroom, with recitations and songs by villagers.
7、I like going to an art exhibition once or twice a year.
8、An excessive emotion was required to wring from him, once or twice a year, that lugubrious laugh of the convict, which is like the echo of the laugh of a demon.
9、Many countries use ivermectin in a strategy called mass drug administration (MDA), which means that the entire population in an affected area is given the drug once or twice a year.