The more numerous a species becomes, the more likely it'll be attacked by it's nemesis a cordyceps fungus. 越多的物种产生,就会遭到越多的寄生菌攻击
the Arctic becomes ''The land of the midnight sun'' 北极变成了所谓的“午夜太阳之地”
The krill becomes concentrated as the spiralling net of bubbles draws inwards. 螺旋型的气泡网逐渐收紧,把磷虾聚在一起
becomes a clear and obvious target and is asking for trouble. 立刻成为显眼的目标 很快便遭了殃
In the ascent every wing beat becomes an exhausting struggle. 上升过程中每扇一下翅膀 都得用尽全身气力
But at dusk the plateau becomes a more dangerous place. 可是一到傍晚 高原便成了 一个危机四伏的地方
The Okavango becomes criss-crossed with trails as animals move into its heart. 动物们逐渐进入奥卡万戈的中心地带 这里的路变得纵横交错
so the land becomes barren with little for animals to eat. 大地一片荒凉 动物们的食物日益稀少