Vandalism used to be a rare occurrence here.
过去这里很少发生故意破坏公物的事。
Laughter was a rare occurrence in his classroom.
他的课堂上难得有笑声。
This is a rare occurrence as our climate seldom goes to extremes.
由于这里的气候很少出现极端，所以这是很罕见的情况。
But, as you noted, the opportunity to win a title is a rare occurrence.
但是，像你说的那样，夺冠机会很少发生。
One day I received a call from my son in the middle of an afternoon, a rare occurrence.
一天中午，我接到了儿子的来电，平时他很少会在这个时间打来。
This is actually a rare occurrence, regardless of what traditional modelers may hope for, but it does happen every so often.
建模的时候，有时你还是需要事先实现一些设计。这种情况实际上很少发生(不管传统的建模者可能对这种事情的期望)，但是偶尔也会有。
I was fourteen, and he had volunteered to walk me to school in the morning - a rare occurrence - so I knew something was fishy.
我当时14岁，他主动提出要陪我走着去上学—这可是件稀罕事—于是我明白有什么事不对劲了。
On the remote Hermit's Trail off the South Rim of the Grand Canyon, a rare occurrence of rain brings joy to a cold November day.
时下正值冬季，天寒地冻，举目萧条。在大峡谷南缘的隐士步道——美国的西北角落，一道彩虹罕见地划空而出，叫人好生欢喜。
If the number of iterations is known and fixed — a rare occurrence — that number appears in square brackets following the asterisk.
如果迭代的次数已知并且固定——这种情况非常少见——这个数字出现在星号后面的方括号中。
Now I have to say, 'But when you have these fluctuations, which is not a rare occurrence, you can have substorms going off once an hour.'
但现在我不得不说，‘只要有能量的波动变化(其实这些变化是通常存在的)，每个小时都会发生一次亚暴。’
Even if someone did, it would be such a rare occurrence that you would never want to design your entire customer relations philosophy around it.
即便是有人这样做了，那也是极少数的案例，你不能依据这种极少数的案例来设计你的整套客户关系管理方案。
Her two boys and two girls were healthy and doing well after being born July 6 by Caesarean section in what doctors said was a rare occurrence of multiple births.
7月6日，玛格达勒诺剖腹产生下一对男婴和一对女婴，目前，四个孩子都很健康，一切正常。医生说，这在多胞胎中还是很少见的。
Some information pages might be 25 KB, but this would be a rare occurrence in the application. Taking as an example an 8 KB Web page, a single user, and a 32 kbps line, we find
有些信息页可能长达 25KB，但这种情况在此应用程序中很少发生。
Whales and dolphins have been found with hind limbs; this rare occurrence is due to the reemergence of a trait they inherited from their terrestrial ancestors.
发现鲸和海豚身上有后肢；这种稀有的现象是由于它们在陆地上的祖先身上的特征再次被遗传。
Tonight's rare lunar occurrence, when Earth's natural satellite is only a mere 356, 575 kilometers out in orbit, brings the moon to its closest position to Earth.
今天晚上地球的天然卫星月球在其轨道上离地球仅有356575公里远，这使得月球处于离地球最近的位置上，而这也是极为罕见的有关月球的事件。
France Info radio quoted an airport authority source as saying that its absence from the radar could be a question of a transmitter failure, but that this would be a very rare occurrence.
法国资讯电台援引一名机场管理局消息人士的话说，飞机从雷达上消失可能是发射失败的问题，但是这种现象是非常罕见的。
For instance, whales and dolphins have been found in nature with hind limbs; this rare occurrence is due to the reemergence of a trait they inherited from their terrestrial ancestors.
比如说，鲸和海豚身上有后肢；这种稀有的现象是由于它们在陆地上的祖先身上的特征再次被遗传。
However, this is a fairly rare occurrence, and it only wastes a little memory.
不过，这种情况极少发生，而且它只会浪费少量内存。
Where the frequency distribution shows data values decreasing in occurrence from some common condition to a rare condition, a skew exists.
如果频率分布显示数据值从经常出现变为很少出现，则存在倾斜。
At the highest level of profitability, perhaps a very rare occurrence, we might even be able to place our exit stop at the previous day's low to protect the great profit we have accumulated.
如果获得大到不能再大的赢利水平后，这是一种极其少见的情况，我们甚至可以把止损点放在前一天的低点处以保护我们已累积起来的巨额盈利。
Conclusion. This case report discusses the rare occurrence of multiple lumbar pedicle fractures and pars interarticularis (spondylolysis) fractures in a patient with osteopetrosis.
结论：本文就一例少见的复发性多处腰椎椎弓根骨折伴椎弓峡部骨折的石骨症病例的相关问题进行了讨论。
A self organizing method for modeling of a class of forecasting models is proposed. The model is used to forecast the occurrence of rare events in complex systems.
提出了一类预测模型的一种自组织方法，这类模型适用于预测复杂系统中稀异事件的发生。
A self organizing method for modeling of a class of forecasting models is proposed. The model is used to forecast the occurrence of rare events in complex systems.
提出了一类预测模型的一种自组织方法，这类模型适用于预测复杂系统中稀异事件的发生。
应用推荐