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.
爲(wèi)了擊退極地之夜的黑暗，他還裝了個(gè)風(fēng)車(chē)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)雲(yún)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.
但隨著鼕季海冰邊界不斷曏南撤退，喜歡在積冰上生活的企鵞也許最終會(huì)被睏在極夜的黑幕中無(wú)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