off and on

You know, scientists have collected this kind of information off and on over the years, but a lot of it stays within the science community.

你知道，科学家们这些年断断续续地搜集了此类信息，但很多信息却保留在了科学圈内。

As for the political parties, they seem to be able to turn the violence off and on as it suits them.

至于政党，它们似乎可以为满足一己利益而使用暴力或者停止施暴。

Only wind in the trees, which blew the wires and made the lights go off and on again as if the house had winked into the darkness.

只有树丛中的风声作响，风把电线吹动，电灯忽暗忽明，好像房子在对着黑夜眨眼。

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。

We've been a steady buyer off and on [this year] of individual items in the corporate-bond market, mostly investment-grade.

我们今年断断续续地买进了公司债券市场的一些个体产品，其中大多为投资级债券。

The desire to expand my roots and to bear fruit in my life developed into a tool that I've used off and on for more than 20 years.

在我的生活中，想扩展根系和结出果实的愿望变成了一个工具，我不停地用了二十多年。

When I arrive and stand at the turning to Youth, a small path comes into view off and on as if beckoning me.

当我站在青春的路口时，前面有一条小路若隐若现，仿佛在召唤我。

They were ashore nigh on a week, and us standing off and on in the old Walrus.

他们在岸上停留了有一个星期光景，我们这些人呆在老‘瓦鲁斯’号上。

The cylinder loads mutual lock safety device; the cylinder unable to install, if the switch has not turned off, and on the "on" position.

气瓶装入互锁安全装置；开关未关旋钮处于开的位置气瓶将无法安装。

As her patient slept soundly during the night, Nurse Betty was able to doze off and on in a bedside chair .

贝蒂护士的病人夜晚睡的很香所以她就可以在床边的椅子里断断续续地小睡了。

an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on.

利用能将太阳光转换的镜子来传送电信信息的装备。

Our 10-year occupation, and our off-and-on-again attempts at nation building, have been a disaster.

我们对阿富汗10年的占领和阿富汗国家建设方面时断时续的的尝试都是十足的失败。

The idea of being a writer had come to me off and on since childhood, but it wasn't until recently that the possibility took hold.

从孩提时代，我就断断续续地有当作家的念头，但直到最近，这一想法才有了实现的可能。

He wrote to a girl in London off and on for several years.

他与伦敦的一位姑娘断断续续地通了几年信。

The construction of the Yu Yuan Garden bean in 1558, but it was not completed until 1578 because building went off and on for lack of money.

豫园的建造始于1558年，但由于资金短缺时建时停，1578年才建成。

There have been talks off and on for 25 years but nothing has come of it so far.

高尔夫加入奥运会的话题已经断断续续25年了，但是目前为止没有任何进展。

Mills are expensive to turn off and on, while the capital needed to open up a new mine site is crippling.

钢铁厂开开停停很费钱，而开采一个新矿场需要大笔资金。

G had worked in the company off and on for two years before G went abroad.

出国前我在这家公司断断续续地工作过两年。

Active Lens can be turned off and on quickly and locally, which means individual parts of the LED panel can deliver 3D images.

动态调焦可以实时且局部的关闭和开启，即LED面板的任意部分可以随时输出3D图像。

Opposition supporters have demonstrated off-and-on for at least six months.

反对派支持者至少在过去6个月中一直在断断续续地示威。