number of death的用法和样例：
例句
- In treated groups,the dead number and the death rate of S.henanense were both increased with the rising of the concn.of heavy metals and the prolonging of the treating time.
处理组中河南华溪蟹溪蟹的死亡数和死亡率均随重金属浓度的升高和处理时间的延长而增加。 - The stubbornly high numbers of maternal deaths will not go down until more women have skilled attendants at birth and access to emergency obstetric care.
如果没有训练有素的陪护和紧急助产护理，居高不下的产妇死亡数是不可能下降的。
