交易时有时无：1977年3笔，1978年没有，1979年又有3笔。
The deals came in spurts: three in 1977, none in 1978, three more in 1979.
丹尼尔：我猜是的。时有时无。
我猜是的。时有时无。
他的良心时有时无。
时有时无的网络连接使故障查询工作更加困难。
The up and down network connectivity makes the troubleshooting matter even worse.
供水时有时无，地下室里有老鼠，草长得比我还高。
The water supply was sporadic, there were possums living in the basement, the grass was taller than I was.
现在我收入不稳定，时有时无，这个是个决定因素吗？
At present, I have unstable income, so will she judge me by this thing?
且厂家由于原材料时有时无，也不答应远期交货的定单。
When the raw materials and manufacturers, also don't promise is sometimes the forward delivery order.
南非人民也应能想到，时有时无的电力供应问题将不会有改观。
Meanwhile South Africans can expect their lights to flicker on and off.
随着我们眼睛看画像部位的不同，蒙娜丽莎的微笑也就时有时无。
As our eyes scan different parts of the portrait, Mona's smile seems to fade in and out.
这可能造成时有时无的性能结果，这与测试时网络的利用率直接有关。
This can cause sporadic performance results depending directly upon the network utilization at the time of the tests.
然而清醒的状态显然不是恒常的，它在二十四小时里时有时无地出现。
And yet clearly the waking state is not permanent. It comes and goes every twenty-four hours.
大自然就是这样让人不可捉摸：风时有时无，风大的时候不得不关停所有风机。
Nature is unpredictable: Sometimes there is no wind; other times, it's so strong the turbines have to be shut down.
但是，这些心杂音时有时无，即使是MVP患者，心杂音也未必会在检查时出现。
However, these abnormal heart sounds may come and go, so they may not be heard at the time of an exam, even if you have MVP.
这会非常令人安心，因为如果不是这样，譬如重力或化学作用时有时无的话，就会产生混乱。
This is very reassuring, because otherwise there would be chaos if things like gravity or chemistry worked sometimes but not others.
然后，他流落于华纳兄弟片场，作为制作电影布景的木工，工作时有时无，而他的运气由此发生了改变。
Then he drifted into casual jobs as a film-set carpenter at Warner Brothers and his luck changed.
所有这些都是8月8号早晨开始的，然后袭击时有时无，但是从8号到15号，飞机从来没有停止过轰炸。
The morning of [August] 8 is when everything started, " Meladze said. "So, then it was going up and down, up and down, but the planes never stopped from [the] eighth to 15."
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。
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.
经过了十年的咖啡屋会议，时有时无的情感睦葛，和闹腾又温馨的回忆，老友记的粉丝们终于迎来了曲终人散。
After ten years of coffee-house meetings on-and-off romances and memories both hilarious and heartwarming the series wrapped up with fans feeling a sense of closure.
小雪时有时无地飘落着，大屏幕电视上播放着周日下午举行的群星荟萃的一场音乐会的画面，周围则聚满了人群。
As light snow fell intermittently, small crowds gathered around large-screen televisions showing reruns of Sunday afternoon's concert featuring a star-studded cast.
食物上只要标明“无糖”，就不会影响人的血糖含量，这似乎是一个常识。但有时血糖含量还是会收到影响。
It seems like common sense that foods labeled "sugar free" would have no effect on sugar levels in the blood. But sometimes they do.
你当然是相信有时你能进入无梦睡眠的。
Of course you believe that at times you're in dreamless sleep.
这个方法有时被称为就位再工程，可减少由于相应范围无控制地扩大或未预见到复杂情况而导致的风险。
This approach, sometimes called in-place reengineering, reduces the risks from scope creep and unforeseen complications.
无遮盖的人体画像，有时具有讽喻意义。
此错误可导致流程中的无控制迭代激增(本示例中为Task 1的迭代)，此情况有时可使用Business Modeler模拟检测出来。
This mistake can lead to an explosion of uncontrolled iterations of the process-in the example for Task 1-which can sometimes be detected by using Business Modeler simulation.
这只无名的鸟，有时听任自己留在笼栅之内，对自己低语着无束缚的不可知的外界的音讯。
The unknown bird sometimes surrenders itself within the bars of the cage to whisper tidings of the bondless unknown beyond.
有时防震器闲置要比抵抗波力来得更好，并且建筑物的共振可以随着时间的推移而改变，使无源阻尼器效果低。
Sometimes shock absorbers resist waves that it would be better to relax with, and the resonance of a building can change over time, making passive dampers less effective.
经过多年无果的等待后，房产市场依然没有冷却，在亲朋好友的还有时间的刺激下，朱先生和贾小姐终于决定今年结婚。
After years of waiting fruitlessly for the housing market to cool, Zhu and Jia decided to get married this year, prodded by their friends and parents and conscious of passing time.
基于物种关系的一个分析表明，进化路线有时是从有斑点到无斑点，有时又反过来，这取决于栖息地在哪里。
An analysis based on the relationship between the species, though, shows that evolutionary lines can swap from spots to no spots, and vice versa, as the habitat dictates.
有时，保持默默无闻比让人恨你要好得多。
Sometimes, it is better to remain unknown than to make pimple hate you.
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