On rare occasions, this tumor can become malignant, especially in elderly individuals.

极少情况下，这种肿瘤会转变为恶性，特别是在老年人中。

Not surprisingly, repeated inflammation can also give rise to pancreatic cancer on rare occasions.

在极少数情况下，反复发生的炎症也可能进展为胰腺癌。

Temperatures can on rare occasions even drop to minus 50 here on the coast of Antarctica.

南极海岸的气温偶尔甚至会降到零下50度。

On rare occasions, there can also be other types of eye inflammation, including involvement of the optic nerve itself.

在罕见的情况下，还可能出现其它类型的眼部炎症，比如视神经病变。

On rare occasions people report feeling a tingling after eating sushi — that's not the wasabi people, it's worms!

少数情况下人们吃完寿司后会出现刺痛感 —— 这不是因为芥末酱的刺激，而是蠕虫！

It's the second most common cancer in women, but can also, on rare occasion, affect men as well.

它是女性第二大常见癌症，但偶尔也有男性发病。

On rare occasions, a high school kid does it.

在极少的偶然下，高中生也可以做到。

On rare occasions in his life, Plotinus experienced a fusion of his soul with God.

普罗提诺在他一生中极少数情况下经历过他的灵魂与上帝的融合。

Such as buffalo, rhinoceros and even on rare occasions, elephants.

例如水牛、犀牛，甚至在极少数情况下，还有大象。

On rare occasions, a sudden change in heart rhythm prevents the upper chambers of the heart from contracting normally.

在极少数情况下，心律的突然变化会阻止心脏上腔的正常收缩。

Health officials say on rare occasions, the live, but weakened poliovirus in the oral vaccine may genetically alter in the immunized person's gut triggering the disease.

卫生官员称在极少数情况下口服疫苗中存活但被削弱的脊髓灰质炎病毒可能在免疫人群的肠道中改变引发疾病。

On rare occasions, when an attack intensified, I would drive Laura to Mount Auburn Hospital in Cambridge, where she would be given prednisone, a nebulizer treatment, or both.

在极少的情况下，当病情加剧时，我会开车送劳拉去剑桥的奥本山医院，在那里她会接受强的松治疗，雾化治疗，或者两种都接受。

For most people, presence is experienced either never at all or only accidentally and briefly on rare occasions without being recognized for what it is.

对大多数人来说，临场感要么根本没有，要么只是偶然地在极少数情况下短暂地体验到，而没有被认出它是什么。

" Let's never speak of this again." NB: And on rare occasion, " I'm the best." (Laughter) Sometimes, you've just got to let people know.

“我们不要再说这个了。”NB：在极少数情况下，“我是最棒的。（笑声）有时，你只需要让人们知道。

Since measles affects various organs like the lungs, intestine, and brain, it can lead to complications such as pneumonia, diarrhea, and, on rare occasion, encephalitis —all of which can lead to death.

由于麻疹影响各种器官，如肺、肠和大脑，它可导致并发症，如肺炎、腹泻，偶尔还可导致脑炎，所有这些都可能导致死亡。

In July and August, however, it appears to rise with the sun, shining so brightly that on rare occasions it can even be seen during the day.

然而，在 7 月和 8 月， 它似乎随着太阳升起，闪耀得如此明亮， 以至于在极少数情况下甚至可以在白天看到它。

On rare occasions, the Supreme Court does look at a case again but certainly when the issue is an equally divided court, it often happens that the same issue come to the justices again in a different lawsuit.

在极少数情况下，最高法院确实会再次审理同一个案件。但肯定的是，当面临法官人数均等的法院时，这就经常会发生，那些不同的诉讼中的同样的问题会再次出现在法官面前。

On rare occasion, a large stone (typically over two and a half centimeters) can cause ongoing or repeated inflammation of the gallbladder, which can make the wall of the gallbladder a bit edematous or swollen and slightly more sticky.

在一些罕见情况下，一颗大的结石（通常大于2.5cm）可以引起持续性或反复性胆囊炎，可能导致胆囊壁轻微水肿或肿胀，伴轻微粘性。