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A population is continually modified by increases (birth and immigration) and losses(death and emigration), and is limited by the effects of environmental factors such as disease.
中文意思:
一个种群始终处于不断的波动中,其原因是由于增长(出生和迁入)、降低(死亡和迁出)的改变,以及受环境因素如疾病的限制。


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A popular song especially of a romantic or sentimental nature. 伤感的情歌尤指浪漫的或伤感的流行歌曲
A popular summer resort since the 1800s, Niagara-on-the-Lake gained cultural cachet when a group of theater artists founded the Shaw Festival in the 1960s. 从十九世纪初开始,尼亚加拉湖镇就成了人们的度假胜地,而自从二十世纪六十年代一群艺术家在此举办萧伯纳节后,小镇更是打上了文化的烙印。
A popular television host known as China's Larry King said that Shanghai authorities pulled the plug on his talk show this year to prevent him from exposing a sensitive case of local official corruption. 一名颇受欢迎、被誉为中国的赖利金的电视节目主持人说,上海当局今年停播他的谈话节目,是要避免他揭发一宗当地官员贪渎的敏感案件。
A popular theory, championed by Uta Frith of the Medical Research Council in London, holds that autistics lack an intuitive “theory of mind”—that is, they cannot automatically perceive what someone else is thinking. 由英国医学研究委员会的傅瑞斯所支持的某个流行理论,认为自闭症患者缺乏具有直觉的「心灵理论」,也就是说,他们无法自发地觉察别人在想些什麽。
A population center, often incorporated, larger than a village and usually smaller than a city. 镇人口中心,通常为合法实体,比村庄大但通常比城市小
A population is continually modified by increases (birth and immigration) and losses(death and emigration), and is limited by the effects of environmental factors such as disease. 一个种群始终处于不断的波动中,其原因是由于增长(出生和迁入)、降低(死亡和迁出)的改变,以及受环境因素如疾病的限制。
A population of a particular species can better adapt to changes in environmental conditions by changing its genetic structure and producing more offspring who can tolerate the changed conditions (principle of natural selection and biological evolution). 一旦环境条件改变,一个物种的族群可藉由改变其基因结构及繁衍更多子嗣,其可忍受改变后的环境,以求适应环境。
A population of a particular species can change its size, age structure, and distribution to avoid or reduce the harmful effects of an environmental stress (principle of population dynamics). 对一个特定的物种,其族群可藉由改变其身形大小、年龄结构、地区分布,以避免或减低不良环境压力的危害作用。
A population-based, cross-sectional study using data on women that deliered singleton births between 20 and 43 weeks in Missouri (1989-1997) was conducted (n = 626,883). 本研究基于人口学的横断面研究。所选择的对象是1989-1997年密苏里州生育一胎的妇女,年龄由20岁-43岁。
A populist aversion to business monopolies. 人民党主义对商业垄断的反对
A porch or balcony, usually roofed and often partly enclosed, extending along the outside of a building. 游廓,走廊;阳台阳台或走廓,通常有顶并部分封闭,沿着建筑物的外部延伸
 
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