off-and-on

1. It takes several weeks of off-and-on practice to master the various knife techniques, but once learned they are never forgotten.: 你要花上数周的时间不时地练习练习才能掌握各种刀法技巧，但一旦学会就再也不会忘记了。

2. The pursuit of a genuine variety of opinions that are well thought through and well grounded is essential. But that has an off-and-on, hit-or-miss connection with ethnic and racial persity.: “对于我和很多学者来说，真正有意义的多元化是课堂上思维的多元化，”他说，“对于经过仔细推敲、有充分依据、真正多样化的见解的追求才是最根本的，那跟民族和种族的多元化并没有什么必然的联系。”

3. Off came her sneakers and on went a pair of stilettos.: 她脱下运动鞋，穿上一双细高跟鞋。

4. It was Mrs. Dearden's day off, and Paul was on duty in her place.: 那天是迪尔登夫人休息日，保尔替她上班。

5. He flung off his coat and collapsed on the sofa.: 他随手脱掉大衣，倒在沙发上。

6. The company is selling off some sites and concentrating on cutting debts.: 该公司正在变卖一些地皮，全力削减债务。

7. It rained on and off all day.: 雨断断续续地下了一整天。

8. I left my car in a lay-by and set off on foot.: 我把车留在路侧停车带，开始步行。

9. Just buzz off and let me get on with my work.: 走开，我得继续干活了。

10. Sam was flicking a flashlight on and off.: 萨姆正啪啪不停地开关着手电筒。

11. A neon sign flashed on and off above the door.: 门上方霓虹灯忽明忽暗地闪烁着。

12. The rugby tour was a disaster both on and off the pitch.: 这次橄榄球巡回赛在场上、场下都彻底失败。

13. I was still working on and off as a waitress to support myself.: 我仍然有时做女招待来维持生活。

14. I've been involved with pubs off and on for ten years.: 我从事和酒吧相关的事业加起来有十年时间了。

15. I have lived here off and on since 2007. I am a journalist.: 从2007年起，我就断断续续地住在这儿。我是一名记者。

16. It rains off and on.: 雨忽而下，忽而停。

17. It drizzled off and on all day.: 毛毛雨已经时停时续地下了一整天。

18. Rather, this is something that I have been thinking about, off and on, for some time.: 相反，这是我一直在思考的，断断续续地一段时间中形成的。

19. Lest readers charge me with conflict of interest, I should add that, though we've stayed in touch off and on, we've never socialized.: 为了避免读者指责我利益冲突，我应该补充一点，虽然我们保持着时有时无的联系，我们从来没有一起社交过。

20. We worked for a couple of weeks (off and on) and finally solved this problem.: 我工作了两个周(断断续续的)最终解决了这个问题。

21. The Jews and Arabs of Palestine have been fighting off and on for 100 years.: 巴勒斯坦的犹太人和阿拉伯人已经断断续续地斗争了100年之久。

22. They drank, off and on, for several days.: 他们断断续续地喝了好几天。

23. By increasing or lessening the hours of darkness in each day, the scientists have been able to turn plant growth off and on like an electric switch.: 用增加和减少每天黑暗小时数的方法，科学家已经能够控制植物生长，如同控制一个电器开关。

24. There are plenty of resources (both off - and on-line) that will help you cross those business process Bridges when you get to them.: 当你要开始的时候，有很多在线或者网下的资源可以帮助你跨过这些工商程序。

25. The next step was the lengthy process of turning parts of the system off and on to see what made a difference.: 接下来一个漫长的过程开始了，他们把系统的各个部分逐一打开、关闭，看看前后有何区别。

26. Managing extensions by turning them off and on can be a major hassle, especially since it requires a restart of the browser - but there is a solution.: 关闭或开启扩展可能是一个大麻烦，特别是它需要重新启动浏览器-但这里有一个解决办法。

27. And because the trimmer can be turned off and on with the flip of a switch, it is also more convenient than gas-fueled models: There's no temptation to idle it.: 而且由于这款剪草机只需轻按按钮就能开关，因此它比汽油动力的型号用起来也更方便：你有什么理由拒绝它呢？

28. He was a former industrial-arts teacher whom my mother dated off and on for much of my childhood.: 他以前是教工业艺术的老师，在我童年的记忆中，他和妈妈总是分分和和。

29. Yahoo! And Microsoft have been talking, off and on, since last year.: 雅虎和微软自去年起进行了断断续续的谈判。

30. Yahoo! And Microsoft have been talking, off and on, since last year.: 雅虎和微软自去年起进行了断断续续的谈判。

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