Whether older women miscarry more often or whether they report more miscarriages is a debatable point.究竟是年纪大的女性更容易流产还是她们报告了更多流产事例，这一点仍存在争议。Miscarriages are usually caused by abnormal chromosome patterns in the fetus.流产通常...

n.流产( miscarriage的名词复数 )...

miscarriages的音标：...