polar night

基本解釋

To fight off the perpet-ual blackness of the polar night, a windmill was installed to run electric arc lamps.
為了擊退極地之夜的黑暗，他還裝了個風(fēng)車發(fā)電運(yùn)行電弧燈。
This difference allows the satellite to capture a year-round sea ice record, despite cloud cover and months of polar night.
這種差別使得衛(wèi)星能夠獲取整年的海冰記錄，除非出現(xiàn)云層遮蔽或極夜的月份。
But as the annual winter sea ice boundary retreats farther south, pack ice penguins may ultimately find themselves trapped behind a curtain of polar night for which they have no hardwired strategy.
但隨著冬季海冰邊界不斷向南撤退，喜歡在積冰上生活的企鵝也許最終會被困在極夜的黑幕中無法脫身。

a night or the time in winter at places close to the North or South Pole, when the sun does not appear above the horizon