conversely

夏天时北方炎热，而南方却相反地凉爽。

The north is hot in summer, while the south is ___conversely cooler.

我喜欢夏天去海边度假；相反，我姐姐更喜欢冬天去滑雪。

I love going to the beach in summer; ___conversely, my sister prefers skiing in winter.