“我们仍不明白引起这些差异的原因，但我们计划下年来研究这个问题，”他说。
"We don't yet know why these differences occurred, but plan to studyit in the next year, " he said.
7个碳的庚烷引起不明原因引擎抽风。炼油厂尝试混入更多的8个碳的辛烷。
Of these, heptane with 7 carbons causes undesirable engine knocking, so refiners try to blend in more smooth-burning octane with 8 carbons.
你不应该感到羞愧或害怕，因为你没有什么可担心的——你真的不明白引起问题的的原因。
You shouldn't be ashamed or afraid, because you have nothing to fear - you really do not understand the causes of a problem.
主要由麻醉方面的原因引起死亡的14例中，属麻醉选择失误者4例、麻醉处理不当8例，操作失误1例，原因不明1例。
Of the 14 cases related to anesthesia 4 were due to error in selection and 8 due to mismanagement of anesthesia, 1 technical error and 1 with unknown cause.
凡士林霜是一种抗生素，对于由细菌感染引起的开裂是可以治愈的，若发现时候使用之后效果不明显，或许致病另有原因。
The treatment your doctor prescribed, Fucidin, is an antibiotic, and would almost certainly have cured the cracks by now if a bacterial infection was to blame.
结果引起婴幼儿脑外积液的主要原发病有感染性疾病、硬膜下或蛛网膜下出血、缺氧缺血性脑病（H IE）占67.4%（31/46例），原因不明占26.1%（12/46例）。
Results EH mainly resulted from infection, subdural hematoma or subarachnoid hemorrhage, HIE, which were 67.4%(31/46 cases) of the cases; EH with unknown cause were 26.1%(12/46 cases).
目的探讨骨显像对不明原因骨痛病人的诊断价值及引起骨痛的常见疾病。
Objective to investigate the diagnostic value of bone imaging for bone pain of unknown cause and the common diseases that caused the symptoms.
现有理论学说与临床现象的矛盾引起广泛争论和分歧，主要原因是确切发病机制的不明确。
At present, there are many contradictions between the theory and clinical picture, and the main reason of which was the ambiguity of exact pathogenesis.
报告10例因上斜肌麻痹引起的眼性斜颈，其中8例为先天性，1例后天性，另1例原因不明。
This article reports 10 patients with paralysis of the superior oblique (ocular torticollis), who were operated on.
报告10例因上斜肌麻痹引起的眼性斜颈，其中8例为先天性，1例后天性，另1例原因不明。
This article reports 10 patients with paralysis of the superior oblique (ocular torticollis), who were operated on.
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