Itchy skin has many causes, including dryness and allergies, but only rarely does it signal that a person has cancer.
皮肤瘙痒存在许多诱因，其中包括皮肤干燥和皮肤过敏，但是把皮肤瘙痒作为癌症的一个体征是很少见的。
Portable Document format (PDF) files have increasingly been used as a means to deliver spammers' advertisements, but only rarely has the file format been used as an attack vector.
PD F文件已被越来越多地用来作为一种手段来运送垃圾邮件广告，但只有少数的文件格式被用来作为一个攻击向量。
But it was rarely used, most often being granted only as a special favour to friends by those in power.
但当时很少使用，仅仅作为一种对朋友的特殊优惠。
Real men do cry but only when they are tapping the emotion segment of the brain, and men will rarely let this happen in public.
真正的男人确实会哭，不过只是在触动了大脑的情绪区时。但是，在公共场合，男人很少让这种情况发生。
Big anniversaries come and go, but moments like this arise only rarely.
大型年度庆典来来往往，但像这样的时刻很出现。
Yet one culprit is not only rarely seen as an offender, but is also being cosseted and protected.
然而，由一个罪犯不仅没被看成是罪犯，反而备受宠爱的被保护了起来。
Deflation was not only unthinkable but rarely mentioned in the press.
通货紧缩在那时是不可想象的，连媒体也很少提及这一点。
The isotope does occur in nature but only extremely rarely.
钋的同位素在自然界中的确存在，但是相当罕见。
Migratory birds can carry these viruses, in their low pathogenic form, over long distances, but do not usually develop signs of illness and only rarely die of the disease.
候鸟可以低致病性方式远距离携带这些病毒，但通常不显示疾病体征并且很少死于该病。
"Rarely has a single book not only challenged, but decisively changed my mind." - Arlo guthrie.
很少有像这样的一本书，不仅挑战，而且彻底改变了我的思想。
Susan B. Anthony dollars are legal tender but, having been produced only from 1979-81 and then again in 1999, they are rarely seen in circulation.
SusanB .Anthony美元也是美国法定货币的一种，但是只有在1979到1981年间发行，1999年再次发行，在流通中很少见。
Little attention, only will find dashboard can clean dishcloth or sponge, but if the parts can rarely specific parts of a few special homemade tool these problems can be solved.
稍微注意一下仪表板就会发现，只用抹布或海绵就能够清洁的部位很少，但是如果能针对具体的部位自制一些专用的工具这些问题就会迎刃而解了。
Venus rarely goes out of phase, but fortunately, this will only be retrograde for six weeks.
金星很少异相，不过幸运的是，这次逆行只有六周。
Jupiter only rarely meets with Pluto, but it's good news when they do, for this pairing has the power to produce huge financial deals.
木星很少会和冥王星相遇，但这是他们带来的好消息，这对组合有力量去产生促进巨大的金融交易。
In other words, capital punishment remains only in official law books but is rarely used.
换而言之，死刑仍然仅出现于官方的法律文献中，事实上很少使用。
Her parents not only understand that she is busy and under a great deal of work pressure but they also rarely bring up the topic of marriage before her.
她的父母不仅理解她工作很忙且压力很大，而且很少在她面前提起婚姻这个话题。
The other signal occurs rarely, only a couple of times per year on the daily charts of most markets, but it's worth waiting for because it is the strongest signal in technical analysis.
其它信号很少发生，大部分市场日线图上每年才产生几次，但是值得等待，因为这是技术分析中最强的信号。
Only some of the villi are grape - like, and a fetus can be present, but rarely survives past 15 weeks.
仅有一些绒毛呈葡萄状，胎儿可以存在，但很少活过15周。
But I rarely think of the mom and only flying and traveling myself, ignored the mother's bitter salt.
但我很少想起母亲。我只顾自己飘着，飞着，忽略了母亲的咸苦。
Intrahepatic bile duct stone is a common disease, but liver perforation resulting from it has been rarely reported and can only be detected during operation.
肝内胆管结石是常见病，但结石所致肝穿孔报道少见，手术中才得以发现。
Rarely has a single book not only challenged, but decisively changed my mind.
很少有像这样的一本书，不仅挑战，而且彻底改变了我的思想。
Elegant assembly offered not only the chances for painters to communicate, but gave painters chances to appreciate the ancient's artists works which was rarely to find in civil society.
雅集不仅为他们提供了与其他画家交流的机会，也让参与其中的画家能够看到平时难得一见的古代大师作品。
In the past few years middle-class parents have realised that their children not only don't know which fork to use at a formal dinner but rarely use a fork at all.
最近几年，中产阶层的父母们意识到，他们的孩子不仅不知道在正式宴会上如何使用叉子，根 本就是很少用叉子。
In the past few years middle-class parents have realised that their children not only don't know which fork to use at a formal dinner but rarely use a fork at all.
最近几年，中产阶层的父母们意识到，他们的孩子不仅不知道在正式宴会上如何使用叉子，根 本就是很少用叉子。
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