是的，但是侵蚀是由多种原因引起的，比如天气和侵蚀山脉的河流。
Yes, but erosion is caused by many factors, like weather and rivers carving into the mountains.
本病病因比较复杂，最初认为猝死症是一种综合症，可能由多种原因引起。
This disease was considered as a syndrome caused by poly-agents at the beginning.
听力受损是由多种原因引起的，包括传染性疾病、噪声、外伤或者仅仅是由于老化。
Hearing loss can be caused by a variety of factors, including infectious disease, loud noises, injury and simple aging.
在那里由多种原因引起的问题对于士兵们来说很难克服，如果你决意要解决，他们给你的唯一办法就是药片。
"It's not easy for soldiers to admit the problems that they're having over there for a variety of reasons, " LeJeune says.
抑郁症没有单一的原因；通常情况下它是由多种原因共同引起的。
Depression has no single cause; often, it results from a combination of things.
或股骨头缺血性坏死，是由多种原因导致的股骨头局部血运不良，从而引起骨细胞进一步缺血、坏死，骨小梁断裂。
Or femoral head anemic necrosis, is the femoral head partial blood circulation which causes by many kinds of reasons bad, thus causes the bone cell further ischemia, necrosis, bone young Liang breaks.
或股骨头缺血性坏死，是由多种原因导致的股骨头局部血运不良，从而引起骨细胞进一步缺血、坏死，骨小梁断裂。
Or femoral head anemic necrosis, is the femoral head partial blood circulation which causes by many kinds of reasons bad, thus causes the bone cell further ischemia, necrosis, bone young Liang breaks.
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