In this period, named after the meteorologist John Dalton, average temperatures in parts of Europe fell by 2c.
在这段以气象学家约翰·道尔顿命名的时期里，欧洲部分地区的平均温度下降了2摄氏度。
At the beginning of the 19th century, John Dalton theorised that an atom was an indivisible particle of an element.
在第19世纪开始，约翰·道尔顿建立了原子是元素不可分的微粒的理论。
At the beginning of the 19th century, John Dalton theorised that an atom was an indivisible particle of an element.
在第19世纪开始，约翰·道尔顿建立了原子是元素不可分的微粒的理论。
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