A leggy evergreen looms over a stretch of Arctic boreal forest as light from the aurora borealis paints the night sky emerald green.These natural fireworks shows, also called the northern lights, occur when solar wind—electrically charged particles blasted from the sun—collides with atoms in the upper atmosphere over the Earth's magnetic poles.
一株常青植物在北極圈的北方針葉林中獨樹一幟,隱現在被北極光染成翠綠色的天空下。這種天然的煙花表演,稱為極光。太陽中的帶電粒子爆發形成太陽風,當太陽風與地磁極上空的高層大氣中的原子碰撞時,便產生了極光。
n. 競賽,比賽
vt. 競賽,爭取