美国科学60秒 SSS 2015-02-03
时间：2019-01-20 作者：英语课 分类：2015年Scientific American(二)月
英语课
This is Scientific American 60 second science, I am Chris primsadiasher, got a minute?
Study in birds for a living might sound like a cool job but it is not without logistical challenges for us land down animals. I have a northern gannet, so a really large birds breeding on the top of the cliff.David Granite 1, St Betty Colleges of the French national center for scientific research. and from the bottom of the cliff, I could not see what was happening in their nests. I could not even see whether the birds were zoom 2 or not. 。。Grami says the technology offers a simple solution. by drone carfully flown high altitude over the colony would have been be really helpful. That's right, a drone, Grammy says scientists and citizens are like a increasingly using drone to appoarch birds either for fun or the legitimate 3 research. But they are taking flight without knowing how the aerial robot might affect their avian study subjects. So Grammy and his colleagues had a zoo employing a professonal drone pilot to flight test drone near mallard ducks, with a 14 inch diameter quarter copter. They then got the permission to repeat the experiment on wild flamingoes, and green chicks in the connark, a huge wild land in southern France. After several hundreds flights, the researchers have found that the birds did not seem to care about the drone's colour or approach speed. And the equipment can get it close as 13 feet to the birds without disturbing them, as long as they did not approach over their heads, a angle associated with predators 4. The study is in the Journal Biology Letters. All these high tech tools could be a boom to wild-life ecologists. But at the same time, you always have to assess the impact of technology you are using on animal welfare. And maybe drone welfare too, search youtube and you will find the birds' prey 5, like some privacy aggregate 6.. preserves drone as a threat and make the technology crash later.
adj.花岗岩，花岗石
- They squared a block of granite.他们把一块花岗岩加工成四方形。
- The granite overlies the older rocks.花岗岩躺在磨损的岩石上面。
n.急速上升；v.突然扩大，急速上升
- The airplane's zoom carried it above the clouds.飞机的陡直上升使它飞到云层之上。
- I live near an airport and the zoom of passing planes can be heard night and day.我住在一个飞机场附近，昼夜都能听到飞机飞过的嗡嗡声。
adj.合法的，合理的，合乎逻辑的；v.使合法
- Sickness is a legitimate reason for asking for leave.生病是请假的一个正当的理由。
- That's a perfectly legitimate fear.怀有这种恐惧完全在情理之中。
n.食肉动物( predator的名词复数 )；奴役他人者（尤指在财务或性关系方面）
- birds and their earthbound predators 鸟和地面上捕食它们的动物
- The eyes of predators are highly sensitive to the slightest movement. 捕食性动物的眼睛能感觉到最细小的动静。 来自《简明英汉词典》
n.被掠食者，牺牲者，掠食；v.捕食，掠夺，折磨
- Stronger animals prey on weaker ones.弱肉强食。
- The lion was hunting for its prey.狮子在寻找猎物。