生态学家对磷循环进行了大量研究，因为如我所说，磷是一种重要而不充足的营养物质。
The Phosphorus cycle has been studied a lot by ecologists because like I said, Phosphorus is an important nutrient and it's not so abundant.
地中海地区气候温暖，阳光充足，几乎全年都有大量的新鲜水果和蔬菜供应，人们一天要吃很多次。
The Mediterranean region is warm and sunny, and produces large supplies of fresh fruits and vegetables almost the year round that people eat many times a day.
地中海地区气候温暖、阳光充足，几乎一年到头都出产大量新鲜水果和蔬菜，这些果蔬是人们每天都要吃许多次的。
The Mediterranean region is warm and sunny, and produces large supplies of fresh fruits and vegetables almost a year round that people eat many times a day.
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