这种不可避免的差异是由地理位置、气候条件、交通状况、人口迁移、 海外文化影响等因素所决定的。
Numerous factors are involved in this inevitable distinction: geography, climate, transportation, migration, influence from overseas cultures, etc.
心理学、社会学、人类学、地理学和教育都是决定群体和个体饮食的影响因素。
Psychology, sociology, anthropology, geography, and education are all influential in determining the diets of people as groups and as individuals.
云南松木材的松脂含量主要决定于遗传因素，但又受生长地理位置变异的影响。
The resin content in timber of Yunnan pine was mainly controled by hereditary substance, and also affected by the geographic variation of grow place.
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