Any gains from having more than one offspring at a time might be expected to be outweighed by costs like higher infant and maternal mortality rates.
每次从多于一个孩子那里获得的比期望的更多,通常会伴随着较高的婴儿死亡率和母亲死亡率。
Not only are the rates of infant and maternal mortality lagging behind the Millennium Development Goals, but the level of undernutrition among children is appallingly high.
不仅婴儿和产妇死亡率落后于千禧年的发展目标,而且儿童营养不良的水平也居高不下。
Any gains from having more than one offspring at a time might be expected to be like higher infant and maternal mortality rates.
每次从多于一个孩子那里获得的比期望的更多,通常会伴随着较高的婴儿死亡率和母亲死亡率。