Aortic rupture can occur as in this case, but is rare.
本病可以导致动脉破裂，但是很少见。
Now, speeds like that are pretty unusual, hundreds of times faster than the regular movement of glaciers, but you can actually see glacier move during these surges, though it is rare.
现在，这样的速度是很不寻常的，比冰川的正常移动速度快几百倍，但是你可以看到冰川在这些涌动中移动，虽然很少见。
Such a move is rare, but not unprecedented.
这样的举动少见，但并非从来没有过。
This sediment layer is enriched in the rare metal iridium and other elements that are relatively abundant in a meteorite but very rare in the crust of Earth.
这一沉积层富含稀有金属铱，以及其他在陨石中较丰富而在地壳中十分罕见的元素。
They say his ability is very rare, but Samuel doesn't even realize that what he can do is special.
他们说赛谬尔的能力非常罕见，但他压根都没有意识到他能做的事情是特别的。
At present there is no way to predict or avoid such enormous avalanches, but, luckily, they are very rare.
目前还没有办法预测或避免如此巨大的雪崩，但幸运的是，它们非常罕见。
My mother, who is just shy of five feet tall, is normally incredibly soft-spoken, but on the rare occasion when she got angry, she was terrifying.
我的母亲只有不到五英尺高，平时说话非常温和，但极少数生气的时候，她会表现得很可怕。
Human-to-human transmission of avian flu is rare, but in some cases the virus has passed from poultry to humans.
禽流感在人类之间的传播是罕见的，但在某些情况下，该病毒可以经家禽传染给人类。
Human-to-human transmission of avian flu is rare, but in some cases, the virus has passed from poultry to humans.
禽流感在人类之间的传播是罕见的，但在某些情况下，该病毒可以经家禽传染给人类。
But, in truth, replication is rare in most areas of science.
而且事实上，在大部分的科学领域里抄袭是很少见的。
It may be that life is fairly common, but that "intelligent" life is rare.
有可能生命是相当的普遍，但“智能的”生命是罕见的。
但是有多罕见呢？
But that is quite rare among Nigerian governors, many of whom are bent on lining their pockets.
这在历届的的尼日利亚州长中实属罕见，他们中许多成天想的都是中饱私囊。
We do not know at the moment, but XDR-TB is rare.
目前我们尚不清楚，但是XDR - TB是罕见的。
I mean, it's too bad about the crew member, but it is rare indeed for a movie to show silence in space (see the entry for Star Wars) -television's Firefly gets it right.
我的意思是说那名船员确实很可怜，但在一部电影中看到对于寂静太空的展现实在是太难得了。电视剧中《萤火虫》曾经做到过。
Technical: it is possible but rare to find good web copywriters with poor technical skills.
技术：可能是有的，但很少找到一个优秀的文案却对技术一无所知的人。
The mutation is rare, but cases have been recorded across the world.
尽管发生在鸭子身上的这种基因突变实属罕见，但类似情况此前在世界其他地区也有过报道。
Infection of the incisions or to the spine is rare, but can occur.
手术切口和脊柱的感染非常罕见，但也不排出发生的可能。
But common sense is rare amid the cacophony of corporate life.
但是在公司生活的杂音里常识是稀罕物。
Cashew poisoning is rare, but those who handle them in order to manufacture them to get the shell off sometimes experience the side-effects.
虽然腰果中毒的案例比较少见，但是给他们去壳生产的工人由于亲密接触，有时候会有副作用的隐患。
It is rare, but measles can cause permanent brain damage and death.
罕见的是，麻疹可以引起永久性脑损伤和死亡。
"It is rare but not impossible for someone to be rich and holy," he said one day.
“一个人既富有又圣洁虽然极少但也不是不可能的事。”一天大师说道。
The researchers are hoping to find evidence that the Common True Katydid, once plentiful in New York City but now rare, is still thriving in some regions of the city.
研究者旨在希望发现一种名为“大众”的蟋蟀仍然存在于城市的某些地区，这种蟋蟀曾经在纽约大量存在，现在却很少见了。
It may be tempting to try to align data architecture with that vendor's plan for performance, but it is very rare that such alignment is truly possible.
我们可能会禁不住尝试将数据体系结构针对供应商的计划进行调整，以提高性能，但此类调整很少真的有效。
This is not a new suggestion, but brain cancer is rare, and its rarity makes it hard to study systematically.
这个提议并不新鲜，但脑癌是罕见的，这使做系统研究变得很难。
It is rare, but mumps can sometimes be fatal.
罕见的是，腮腺炎有时是致命的。
This situation is rare, but if it does exist, you cannot enable caching.
这种情况比较少见，但是如果出现了，用户就不能启用高速缓存。
This situation is rare, but if it does exist, you cannot enable caching.
这种情况比较少见，但是如果出现了，用户就不能启用高速缓存。
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