罕见

Polyandry (a marriage of one woman to many men) is very rare, but polygyny (the marriage of one man to many women) is widely practiced in human societies, even though Judeo-Christian traditions hold that monogamy is the only natural form of marriage.

一妻多夫婚姻(一位女性和多位男性的婚姻)非常罕见，但是一夫多妻却在人类社会中普遍存在，尽管犹太-基督教传统认为一夫一妻制是唯一婚姻的自然形式。

Rare instances of polyploid mammals are known, but most often result in prenatal death.

已知的多倍体哺乳动物非常罕见，而且往往大多数导致产前死亡。

This is a sound principle, though there may be rare exceptions: polyploidy in plants is common, and the symbiosis of micro-organisms that formed the eukaryota is a more exotic example.

这是一个合理的原则，但也可能有些罕见的例外：植物出现多倍体很常见，但微生物共生形成真核生物是一个比较奇特的例子。

Pompe's disease is a rare hereditary condition that causes an enzyme deficiency, which in turn leads to the buildup of glycogen, a stored form of sugar used for energy. The glycogen buildup causes progressive muscle weakness throughout the body, particularly in the heart, skeletal muscles, liver, and nervous system. In extreme cases, children can also die of heart failure.

庞贝氏症是一种遗传的罕见疾病，因为缺乏体内的酵素，导致肝醣无法分解堆积，因肝醣无法分解堆积造成心脏肥大、肌肉无力，肝脏和神经系统衰弱，在ㄧ些更极端的病例中，最后就因为心脏衰竭死亡。

Porphyria is a rare genetic disorder that causes an overproduction of a certain protein.

卟啉病是一种罕见的遗传失调过度生产特定蛋白

The Habicht is nitrogen filled and submersible, rare enough for a Porro binocular with central focuser.

Habicht充了氮能潜水，对于中调保罗镜这是很罕见的。

They are quite uncommon if not rare, and are excellent optics for portraiture.

他们是相当少见的，如果不是罕见的，是优秀的光学人像。

Governments, including western countries that usually spurn the generals as pariahs, have responded to the rare appeal for help with big offers of assistance, potentially paving the way for the largest foreign engagement in Burma's troubled post-independence history.

各国政府——包括那些通常不愿搭理这些将军的西方国家——在面对这一罕见的求援时，都表示愿意大力协助。这很可能成为缅甸独立后纷乱历史上最大规模的对外接触。

Chinese people, the extent of poverty and lack of freedom, is the world's rare.

中国人民的贫困和不自由程度，是世界上所罕见的。

PPH is extremely rare, occurring in about two persons per million population per year.

PPH极其罕见，每年的发病率约为2/1，000，000。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失