34 THE CLICKING ROBOT

CHAPTER 34 THE CLICKING ROBOT Dolphins, porpoises, and certain types of whales use echolocation to navigate the ocean. They create bursts of sound, and by listening for the echo, they're able to locate distant objects. It's the perfect way to see in the dark, and Roz wanted to give it a try. Using her voice, the robot let out a powerful clickety clickety click! Then she waited for the sounds to bounce off something, anything, and echo back to her. She waited and waited, but there was no echo. Was she doing it wrong? While the robot swam through the deep, she let out bursts of clicks and hoped that eventually she'd hear them echoing back to her. And eventually, she did. It was quiet, barely a whisper, but Roz definitely heard her own echo. It seemed to be coming from her left, so she headed in that direction and let out another round of clicks. This time, the echo was a little stronger, and she knew she was getting closer. Roz continued clicking, and the echoes returned more quickly and loudly each time, until she came across a huge jellyfish. The robot

海豚、鼠海豚和某些种类的鲸鱼利用回声定位在海洋中导航。 它们发出阵阵的声音，通过听回声，它们能够定位远处的物体。 这是在黑暗中看东西的完美方式，罗兹想试一试。 机器人用她的声音发出了强大的咔哒咔哒咔哒的声音！然后，她等待着声音被什么东西反射回来，任何东西都可以，然后给她回音。 她等了又等，但是没有回音。 她做错了吗？当机器人在深海中游动时，她发出阵阵的咔哒声，希望最终她能听到这些声音的回响。 最终，她做到了。很安静，几乎是耳语，但罗兹肯定听到了她自己的回音。 那声音似乎是从她的左边传来的，所以她朝那个方向走去，又发出了一声咔哒声。 这一次，回声更强了一些，她知道自己越来越近了。 罗兹继续咔哒咔哒，回声一次比一次来得更快更响，直到她发现了一只巨大的水母。 机器人

had tracked down the only other creature in the area. Echolocation worked! "Hello, jellyfish!" said the robot. "I am very happy to meet you!" The jellyfish waved his tentacles in a way that meant… well, honestly, Roz wasn't quite sure what it meant. No matter—she was just excited to have a new way to navigate. She switched off her headlights and continued swimming north in total darkness, clicking

找到了这片地区唯一的其他生物。 回声定位成功了!“你好，水母！”机器人说。 “我很高兴见到你！”水母挥舞着它的触须，意思是……嗯，老实说，罗兹不太确定这是什么意思。 没关系，她只是很兴奋能有一种新的导航方式。 她关掉车头灯，在一片漆黑中继续向北游去

every few seconds and listening for echoes.

每隔几秒就听一次回声。