求翻译：【摘 要】难产是指各种因素导致分娩时间延长，单靠母体力量不能正常排出胎儿的病理过程。分娩是否正常主要取决于产力、产道、和胎儿3个因素。如果其中任何一方面发生异常，就会发生难产，甚至造成子宫及产道的损伤，严重时刻危及母体的生命。除产力、产道和胎儿的因素外，尚与遗传、环境、内分泌、饲养管理和疾病等因素有关。概括的说包括两大方面：母体的营养过剩或不良、缺乏运动。产道狭窄等。胎儿方面有胎儿过大，畸形胎儿，胎向、胎位、胎势不正等。是什么意思？

Abstract dystocia refers to a variety of factors lead to prolonged labor, maternal strength alone can not be properly discharged the pathological process of the fetus. Childbirth is normal depends on productivity, the birth canal and fetal three factors. If either the one hand, an exception occurs,

Elections are coming off as soon as possible to the various factors in extended delivery time alone, not normal maternal power drain fetal pathology. Normal delivery depends primarily on whether or not, road, and the fetal three factors. If any of these occur in a exception that will be a difficult,

(Abstract)The difficult labor is refers to each kind of factor to cause the childbirth time to lengthen, only depends on the parent substance strength not to be able to discharge embryo's pathology process normally.Whether the childbirth normal mainly is decided in produces the strength, the birth c

"Summary" difficult birth refers to a variety of factors leading to prolonged labour, doesn't rely solely on the matrix forces out of the pathological processes of the fetus. Birth is normal mainly depends on the force, the birth canal, and fetal factors 3. If any exception occurs on the one hand, d

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