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The last year is a unusual and uncommon year. The economic and society of our country has experienced many unexpected, historial chanllege and difficult.

过去的一年，是很不寻常、很不平凡的一年，我国经济社会发展经历了多方面难以预料、历史罕见的重大挑战和严峻考验。

The prepared PU was an elastic solid,which could dissolved in ethanol,and it exhibited strong deep purple fluorescence at the peak of 365 nm along with a shoulder at 386 nm as a thin film. Obviously,the prepared PU also was a kind of uncommon ultraviolet-emitting polymer materials.2.A novel water-soluble rod-coil block copolymer was designed and prepared successfully via the facile isocyanic acid polycondensation method using polyfluorene as rod segment and polyethylene glycol as coil segment in the main chain for the first time.

所制备的聚氨酯是一种弹性固体，可以溶解在乙醇中，同时又显示出具有半导体性质的荧光性能——最大荧光发射峰在365 nm并且在386 nm处有一个小的侧肩峰，可见它又是一种非常难得的紫外发光聚合物材料。2、首次采用了简单的异氰酸酯反应，成功地将聚芴作为刚性链段和聚乙二醇作为柔性链段，以嵌段方式连结到聚合物分子主链上，从而形成了一种新型的具有刚性链—柔性链结构的嵌段共聚物。

Background: Congenital kyphosis and acquired kyphoscoliotic deformities are uncommon but are potentially serious because of the risk of progressie deformity and possible paraplegia with growth.

通过肋横突切除同时进行前后路是一有挑战性、但又是安全、多能和有效的治疗胸椎复杂后凸畸形的入路，它减少了发生神经损伤的危险。

Such changes, referred to by linguists as taboo deformation, are not uncommon in a name for something that is feared and include, for example, the change in sequence of the r and t that occurred between el lagarto and alligator.

这些变化，语言学家们称作禁忌变形，在人们惧怕的某种事物的名称里是常见的，而且还包括r和 t 在以下两个单词 ellagarto 和 alligator 间依次的变化。

Intra-oral lipoma is a well-known entity, but lipomatous tumors including salivary gland tissue containing clustered or peripherally located ducts and acinar cells are uncommon.

脂肪瘤是一种已广为人知的良性肿瘤，但在脂肪的肿瘤中含有唾液腺组织（包括唾掖腺管道与胪泡细胞）并不常见。

Liposarcoma is one of the most common retroperitoneal primary tumors. Intratumoral hemorrhage is extremely uncommon in retroperitoneal liposarcomas.

脂肪肉瘤是其中一种最常见的后腹膜腔原发性恶性肿瘤；但是，这种肿瘤极少数会发生肿瘤内出血。

Every man or woman who masted uncommon skill would like to put it to good use until he is acoustmoed to it and can't improve.

任何一个掌握非凡技能的人都乐于施展其本领，直到习以为常或无法再自我提高方才停止。

Diabetic mastopathy is an uncommon condition affecting women with a history of longstanding diabetes mellitus.

糖尿病乳腺病是一种少见的影响妇女健康的疾病，通常见于长期进行胰岛素治疗的糖尿病患者。

Diabetic mastopathy is an uncommon condition affecting women with a history of long-standing diabetes mellitus. The observations of tumor necrosis factor and perforin reveal that cell mediated cytotoxic effects play an important role in the mechanism of this disease.

1984年Soler和Khardori首次报道糖尿病乳腺病，过去也曾被称为纤维性乳腺病、糖尿病硬化性淋巴细胞乳腺小叶炎(diabetic sclerosing lymphocytic lobulitis，DSLL)或淋巴细胞乳腺病。

Constipation) Although not uncommon, constipation can be serious if the colon dilates into a megacolon and loses its function.

猫猫便秘的症状：呕吐，抑郁，不吃东西，大即是很用力紧张，经常收支猫砂盆却大便不出来。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。