Obstruction can lead to prolonged labour, which increases the risk of caesarean section, heavy bleeding, distress in the infant and stillbirth.
阻塞可能使分娩时间延长，从而增加剖腹产、大出血、婴儿窘迫和死产的危险。
2
Too many points of interest in one section of your image can leave it feeling too 'heavy' or complicated in that section of the shot and other parts feeling 'empty'.
兴趣点过多则太过繁复而该区超重，其他区域则感觉轻飘。
3
At last, acquired conclusion is that band cut is not only in relation to gun bore wear and bore pressure, but also to length of heavy wear section.