Shark-detecting drones 可探测鲨鱼的无人机
本集内容 Shark-detecting drones 可探测鲨鱼的无人机
学习要点 有关“Danger 危险”的词汇
边看边答 How does the drone know if it's spotted a swimmer or a shark?
A shadow in the sea or something more sinister?
From the beach it's hard to tell but from the skies the drone has a clearer view. It feeds into deep learning software which it's claimed has a 92% success rate in spotting sharks, as well as less threatening species. Every time it sees a dolphin, whale or a swimmer in distress it learns their shape. Launched along the beaches of New South Wales the drones can patrol for 40 minutes. Daniel was one of the first to train as a lifesaver pilot.
Daniel Trollope, Drone pilot
I mean, I can't physically run out and grab a board and paddle out and save someone, but sitting on the beach we’ve got eyes in the sky and we're just another layer of protection, really.
The drones don’t only observe - they can react too, dropping an inflatable device to help people in the sea. It won't replace the use of controversial shark nets and drum lines however – which some claim do more harm than good. The drones won't be on every beach every day, but they should give everyone a better understanding of what’s down below.
仅仅是一个影子?或是一个更危险的生物?
站在沙滩上看去,很难辨认出海上的阴影是不是鲨鱼,但空中无人机就能看到更清楚的图像。无人机将拍摄到的影像传输给分析海洋的智能软件,这个软件号称可以在探测包括鲨鱼和一些没那么危险的生物时达到92%的成功率。每当无人机看到遇险的海豚、鲸或游泳者时,便会记下一个新形状。在澳大利亚新南威尔士州的海滩沿岸上首次推出了利用无人机执行海上巡逻探测工作,每次探测时间达40分钟。丹尼尔是第一批接受操作无人机培训的“救生飞行员”。
丹尼尔·特罗洛普 无人机操作者
“虽然我不能亲自跑过去、拿上滑板,然后划过去救人,但我们坐在海滩上通过“天上的眼”可以一睹海里的情况,从而我们也就可以给大家提供多一层的安全保障。”
无人机不仅能检测到海上的情况,还能做出及时的反应,比如扔下一个充气漂浮物来帮助在海上的人们。然而,它不能代替尚存争议的鲨鱼网和鼓线的使用,有些人认为使用鲨鱼网和鼓线的弊大于利。无人机上不会每天在每个海滩上巡逻,但它的使用应该能给人们提供一个更好地了解海底下情况的机会。
词汇 sinister
有凶兆的,危险的
threatening
威胁(性)的,危险的
in distress
遇险
do more harm than good
弊大于利
你知道吗 ? There are over 500 species of shark, ranging from the colossal 20m whale shark, which weighs around 30,000kg and is the world's biggest fish, to the tiny dwarf lantern shark that only grows to 10-20cm.
据统计,目前鲨鱼的种类超过500种,从体重约3万公斤的“世界上最大的鱼”— 鲸鲨,到长度只有10到20厘米的“鱼界的小矮人”灯笼鲨。
问题答案 It compares the shape against images and shapes stored in its deep learning software. It’s claimed to have a 92% success rate.
上一篇: 单词 due 的用法
下一篇: 常用不规则名词复数的用法测验
体坛英语资讯:Ugandan football makes major strides in 2018
The Price of Lies 说谎的代价
国际英语资讯:Israel, U.S. successfully test Arrow-3 missile defense system
美剧史上首位变性女超级英雄,人美而且能力赞
国内英语资讯:China confident, capable of keeping economic growth within appropriate range in 2019: premie
国际英语资讯:German green party reiterates support for general speed limit across Germany
国际英语资讯:Politicians from Japan, China call for further development of bilateral relations
为什么用外语撒谎更容易?科学家是这么说的……
体坛英语资讯:LeBron James to miss two road games
国际英语资讯:Former Nissan chief Ghosns latest bail request rejected by Tokyo court
The Things I Own 我拥有的东西
国内英语资讯:Chinas top legislator holds talks with president of Chilean Chamber of Deputies
体坛英语资讯:Two more Chinese players through to Australian Open second round
国内英语资讯:President Xi congratulates launch of China-Laos Tourism Year 2019
米歇尔和Ladygaga同台亮相格莱美奖!你喜欢吗?
娱乐英语资讯:Kacey Musgraves, Childish Gambino take top awards at 2019 Grammys
国内英语资讯:CPC meeting reviews work report, Party regulations
国内英语资讯:A day in the life: survey released on habits of typical Chinese person
体坛英语资讯:Real Madrid suffer Llorente injury blow
国际英语资讯:Zeman hopes B&R initiative will help boost Czech development
体坛英语资讯:South Korea beat China 2-0 to finish top of Group C at Asian Cup
Classic Cartoons 经典卡通
可口可乐和百事可乐到底有什么区别?
国际英语资讯:UN debates impact of climate change, urges action
体坛英语资讯:Raptors bounce back to defeat Bulls
体坛英语资讯:Ruthless display from Serena Williams in first round of Australian Open
这个售价650美元的“思考箱”在推特上火了!里面都有啥?
娱乐英语资讯:Kacey Musgraves, Childish Gambino take top awards at 2019 Grammys
和娜塔丽波特曼同校是什么感觉?
娱乐英语资讯:Dua Lipa wins Best New Artist at 2019 Grammys