再加上6千5百万年前的环境因素，伯克(Bottke)博士估计，恐龙杀手有90%以上的可能是Baptistina之女。
Taking into account the circumstances that pertained 65m years ago, Dr Bottke reckons it more than 90% probable that the dinosaur killer was one of Baptistina's daughters.
五岁以下儿童中与环境有关的主要杀手？
Major environment-related killers in children under five years of age.
大多数疾病—包括糠尿病和一号杀手，心脏病—是由复杂的多基因和环境因素相互作用引起的，如日常饮食，锻炼和吸烟。
Most diseases - including diabetes and the No. 1 killer, heart disease - are caused by complex interactions of multiple genes and environmental factors, such as diet, exercise and smoking.
大部分连环杀手都不是跟环境格格不入的独居者。
The majority of serial killers are not reclusive, social misfits who live alone.
中国有3亿烟民、约7.4亿不吸烟者暴露在二手烟的环境中：烟草是中国最大的杀手。
China has 300 million smokers and around 740 million non-smokers who are exposed to secondhand smoke: tobacco is the country's biggest killer.
室内环境污染已成为严重威胁人类健康的十大杀手之一，因此，为人类提供一个安全的居住环境显得尤为重要。
The environment pollution in the room has threatened people, s health badly and has become one of the ten killers to people's health.
室内环境污染已成为严重威胁人类健康的十大杀手之一，因此，为人类提供一个安全的居住环境显得尤为重要。
The environment pollution in the room has threatened people, s health badly and has become one of the ten killers to people's health.
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