偶然的

Methods A retrospective analysis was performed for images of CT,MRI and DSA of 12 patients with intracranial venous angiomas.In all cases,7 cases male,5 cases female,age ranged from 8 years old to 72 years old.All patients underwent the examinations of CT,MRI and/or DSA.Results All 12 patients had single lesion.In these cases,there were 6 cases （50%） located in cerebella,6 cases （50%） located in cerebra including 3 cases （25%） in lobus frontalis and 3 cases （25%） in lobus parietalis.Most patients had slight clinical symptoms and were detected the lesions accidentally when they were examined for other diseases.Compared the imaging features of CT,MRI and DSA,conventional CT scan was negative,but there were characteristic images which was "dendritic" sign in contrast-enhanced CT and MRI,and typical findings of "caput medusae"sign in venous phase of DSA.

结果 颅内静脉血管瘤均为单发；6例（50%）位於幕下小脑实质内，6例（50%）位於幕上额叶（3例25%）、顶叶（3例25%）脑实质内；患者临床症状轻微，多为合并其他病变检查时偶然发现；CT、MRI及DSA的影像比较，CT平扫为阴性，CT增强扫描与MRI平扫呈特征性表现，即树枝征，DSA静脉期可见典型表现蛇头征。

Acute infection can be asymptomatic, though rare cases of fulminant hepatitis may also occur.

急性感染者可以全无症状，但偶然发生罕见致命的严重肝炎。

"And the young man said, I came by chance to Mount Gilboa, and I saw Saul supporting himself on his spear; and the war-carriages and horsemen overtook him."

报信的少年人说，我偶然到基利波山，看见扫罗伏在自己枪上，有战车，马兵紧紧地追他。

While some urine drinkers use it only as an occasional tonic -- to correct temporary imbalances or diseases -- there are actually many others who down a glassful of urine every day as part of their daily health regimin.

当某些喝尿人应用它只是作为偶然滋补---是为了纠正暂时失衡或疾病---实际上还有许多其他人每天喝一杯尿，作为他每天健康方案的一部分。

Thus, the height of \'supreme wisdom\' is covered by the glooming haze or the legislator that Rousseau asked for is sagacious enough and beyond the chances.

如此，"最高智慧"能否达到并不确定。或许，卢梭所求助的立法者太高超，他并不受制于偶然因素。

Goodyear had invented by accident-the basic method of preparing rubber for commercial use .

古德伊尔偶然发明了制造商用橡胶的基本方法。

It ' s not occasional that my brother chooses his art life. I could see his graffito when I could remember things, on walls, painting paper, books …… every where.

哥哥从事艺术显然不是出于偶然，从我记事起总是在任何地方都能看到他的涂鸦；墙上、绘图纸、然后是课本。

By the way , i happened to obtain a new word: half brother .

对了，我偶然学会了一个新词：同父异母的兄弟。

Do you really believe it's only haphazard?

你真的相信是"偶然"或者"自然"而成的吗？

It is just a thing done at haphazard.

这只是件偶然为之的事情。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！