And this isotherm has shifted in the same rate as the swans shifted eastward.

5摄氏度等温线移动速度与比尤克斯天鹅向东移动速度相同。

Trewartha's decision to use  the 10 celsius average isotherm over 8 months of the year was driven  mostly by predominant vegetation type.

Trewartha 决定在一年中 8 个月内使用 10 摄氏度平均等温线，这主要是由主要植被类型驱动。

So to cater for the mob, I have developed my  own isotherm to separate out the Cfa zone into what would be perceived as either a cool or mild  winter.

因此，为了满足大众需求，我发了自己等温线，将 Cfa 区域划分为凉爽冬季或温和冬季。