人们发现，造成80%的产妇死亡的条件，其发生率和致死率由于饥饿和营养不良而提高。
Hunger and malnutrition have been found to increase both the incidence and the fatality rate of the conditions that cause up to 80 percent of maternal deaths.
然而，当摄入三聚氰胺时，这种化学物质能够造成严重的健康问题，同时在某些条件下会导致死亡。
However, when ingested, the chemical can cause serious health problems and in some cases death.
不满足约束条件的染色体被称为致死染色体。
The chromosome unsatisfied constrain condition is called lethal chromosome.
加之很多病例出现在医疗条件较差的地区，因此当前的致死率也不能代表全部情况。
"As lots of cases were reported in regions with poor medical resources, the current fatality rate does not represent the whole picture, " he said.
不满足约束条件的染色体被称为致死染色体。
The chromosome unsatisfied constraint condition is called lethal chromosome.
目的实验室恒温条件下初步观察钉螺的耐寒能力，推测钉螺在空气环境下的致死低温。
Objective to research the cold hardiness of snails in the constant temperature condition in laboratory, and speculate on the lower lethal temperature of snails in dry air.
根据某工地一名工人因开挖作业而被活埋致死这一事故，论述了作好安全工作防止事故的前提条件和必要的预防、检查、控制、措施及程序。
Based on an incident of a worker buried live, interpret the premise of a good performance in safety and the necessary procedures we should take on to prevent incident.
根据某工地一名工人因开挖作业而被活埋致死这一事故，论述了作好安全工作防止事故的前提条件和必要的预防、检查、控制、措施及程序。
Based on an incident of a worker buried live, interpret the premise of a good performance in safety and the necessary procedures we should take on to prevent incident.
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