然而，在更北的气候地带，由于实行季节性农耕，回归年变得更加关键。

In more northern climes, however, where seasonal agriculture was practised, the solar year became more crucial.

youdao

在北方和南方一年有四个季节。

In the north and south there are four seasons in a year.

youdao

在美国农村，一年都是按照生长季节来排列的。

In rural America, the year was arranged around the growing season.

youdao

This shows a strong seasonality and then a drop off since 2006.

这体现了房地产的季节性,06年又是一次跳水

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