英语听力：自然百科 海洋天堂大堡礁:堡礁内外—15
时间：2019-01-22 作者：英语课 分类：自然百科2014年
英语课
But that pales into insignificance 1, when compared to the daily vertical 2 migration 3 of these mircoscopic animals called zooplankton. At sunset, all of these tiny creatures swin upwards 5, and under cover of darkness, they grease on floating algae 6 close to the surface.Many of them are fish lave. In fact, almost every fish species on the Great Barrier Reef starts life in the plankton 4. They are billions upon billions of them making the round trip, the greatest daily migration on earth. They all travel an extraordinary distance. Size for size, it would be like me running America twice a day. That's if they are not caught on the way up. On the reef wall at about 150 meters deep, a huge sea fans. They look like plants, but they are colonialism animal, whose branching arms capture the rising plankton. Hidden among the branches is the p* seahorse. It's a tiny fish that also feeds on plankton. At a little more than a centimetre long fully 7 grown, it's one of the world's smallest fish.
n.不重要；无价值；无意义
- Her insignificance in the presence of so much magnificence faintly affected her. "她想象着他所描绘的一切，心里不禁有些刺痛。 来自英汉文学 - 嘉莉妹妹
- It was above the common mass, above idleness, above want, above insignificance. 这里没有平凡，没有懒散，没有贫困，也没有低微。 来自英汉文学 - 嘉莉妹妹
adj.垂直的，顶点的，纵向的；n.垂直物，垂直的位置
- The northern side of the mountain is almost vertical.这座山的北坡几乎是垂直的。
- Vertical air motions are not measured by this system.垂直气流的运动不用这种系统来测量。
n.迁移，移居，（鸟类等的）迁徙
- Swallows begin their migration south in autumn.燕子在秋季开始向南方迁移。
- He described the vernal migration of birds in detail.他详细地描述了鸟的春季移居。
n.浮游生物
- Plankton is at the bottom of the marine food chain.浮游生物处于海洋食物链的最底层。
- The plankton in the sea feeds many kinds of animals. 海的浮游生物成为很多种动物的食物。
adv.向上，在更高处...以上
- The trend of prices is still upwards.物价的趋向是仍在上涨。
- The smoke rose straight upwards.烟一直向上升。
n.水藻，海藻
- Most algae live in water.多数藻类生长在水中。
- Algae grow and spread quickly in the lake.湖中水藻滋蔓。