polar night

As It'situates near the Arctic Circle, there happens polar day and night.

由于它靠近北极圈, 这里有极昼和极夜.

Xiaogu wants to say: Because they do not live in polar night, mix extremely day area.

小贾想了想说: 因为他们不生活在极夜和极昼地区.

It found mid-winter, night-time surface temperatures inside the coldest craters in the northern polar region can dip as low as minus247C ( 26 kelvin).

在隆冬时节，北极地区最冷的环形山底部，夜间温度可下降至零下247C（26开尔文）。

A big surprise in this latest study is that rain can fall not only in summer but also in winter, when the polar night would normally mean temperatures are well below zero.

在这项最新研究中，一个令人非常意外的发现是，不仅夏季有雨，冬季也下雨，而且冬季的极地夜晚意味着气温通常远低于零度。

Polar Bear returned every night that week to play with the dogs.

在接下来的一个星期里面,北极熊每个晚上都会回来和雪橇犬玩耍.