Chapter 2

CHAPTER 2 After the bats had flown off for their nightly hunt, the kids went back inside. Lydia ran upstairs to get Abbi's phone and mic, while Daniel and Abbi decided on snacks for the rest of the evening. "Chips?" Daniel asked, looking into the pantry. Barkley sat dutifully at his feet, hoping for a treat. "We had chips with lunch," Abbi said. "Popcorn?" Daniel shook his head. "It gets stuck in Lydia's teeth. We'd have to listen to her complain about it all night."

蝙蝠飞出去进行夜间捕食后，孩子们回到屋里。 莉迪亚跑上楼去拿阿比的手机和麦克风，丹尼尔和阿比决定晚上剩下的时间吃什么零食。 “芯片?”丹尼尔朝食品柜里看了看，问道。 巴克利恭顺地坐在他的脚边，希望得到款待。 “我们午餐吃薯条，”阿比说。 “爆米花吗?”丹尼尔摇了摇头。 “它会卡在莉迪亚的牙齿里。 我们得听她整晚抱怨。”

Abbi laughed. "Good point." Wallis Wallace, Abbi's mom, strolled into the kitchen. She was balancing her laptop on one arm and holding a mug in the other hand. A familiar sight when she was on a book deadline! "What would bats snack on?" Wallis asked as she headed for the stove. "Fruit! That's a great idea, Mom!" Abbi said, then paused. "Or insects." "Mmm, delicious," Abbi's mom said, smiling.

艾比笑了。“好点。” 阿比的妈妈沃利斯·华莱士走进厨房。 她一只手拿着笔记本电脑，另一只手拿着杯子。 这是她赶书截稿时熟悉的一幕！“蝙蝠会吃什么？”沃利斯一边朝炉子走去，一边问道。 “水果!好主意，妈妈！”阿比说，然后停顿了一下。 ”或昆虫。”“嗯，很好吃，”阿比的妈妈笑着说。

Lydia bounded back into the kitchen and placed Abbi's phone in front of her on the table. "What's delicious?" "Bugs," Daniel said. "Hey, bugs can be delicious, you know!" Lydia replied. Wallis moved the teakettle from the counter onto a burner. "That's true! But sadly, we don't have any fried silkworms or caterpillars on hand." Daniel grabbed two pears and a red apple from the fruit bowl on the counter and stood between his sister and Abbi. "Fruit it is, then." Barkley settled under the table. Maybe someone would slip him a bite of apple peel or a chunk of juicy pear! Abbi opened the recording app on her phone and clicked on the most recent file. Two graphs popped up on the screen.

莉迪亚跳回厨房，把阿比的手机放在她面前的桌子上。 “好吃吗?”“虫子，”丹尼尔说。 “嘿，虫子也可以很好吃，你知道的！”利迪娅回答。 沃利斯把茶壶从柜台上搬到炉子上。 “这是真的!但遗憾的是，我们手头没有炸蚕和炸毛虫。” 丹尼尔从柜台上的水果盘里抓起两个梨和一个红苹果，站在妹妹和阿比中间。 “那么，就是水果了。”巴克利坐在桌子底下。 也许有人会塞给他一口苹果皮或一大块多汁的梨！阿比打开了手机上的录音应用，点击了最近的文件。 两个图表突然出现在屏幕上。

"What does all that mean?" Lydia asked, pointing at the images. Daniel leaned over for a better view. "This wave on the top looks like what we learned about in science," he said. "See how it goes up and down?" "Exactly!" Abbi said. "These are the sound waves the bats make. And then this other one shows the frequency—or at what pitch the sounds are. Bat calls are really high-pitched."

“这是什么意思？”丽迪雅指着照片问。 丹尼尔倾身想看得更清楚。 “顶部的波浪看起来像我们在科学中所学到的，”他说。 “看到它是怎么上下摆动的了吗？”“完全正确!”艾比。 “这些是蝙蝠发出的声波。 另一张显示的是频率，或者说声音的音高。 蝙蝠的叫声非常高。”

"What's that second graph called again, Abs?" Wallis said from the stove, waiting for her water to boil. "A spectrogram!" "Such a good word," Wallis said, mostly to herself. "I need to write that one down so I don't

“第二张图叫什么来着，阿布斯？”沃利斯站在炉子边说，等着把水烧开。 “一个谱图!”“真是个好词，”沃利斯说，几乎是自言自语。 “我需要把这个写下来，这样我就不会

forget it again." She wandered into the living room. Abbi used the touchscreen to scroll through different images. She frowned. "Something doesn't look right, though." "What's wrong?" Lydia asked. "The waves." Abbi pointed to the top graph. "They're too long to be from a bat, and the amplitude seems too high." Lydia tilted her head. "Amplitude sounds familiar. Did we learn about that, too?" Abbi nodded. "It means the height of the wave. Oh, I hope nothing got messed up! Maybe I didn't set the right threshold?" Daniel looked at his sister and raised a brow. Lydia shrugged. She didn't understand any of this, either. "Let's listen to it," Daniel said. Abbi nodded. Her finger hovered over the play button. Just then, an ear-piercing whistle filled the kitchen! All three of them jumped.

再忘了它吧。”她漫步走进客厅。 阿比用触摸屏来滚动不同的图像。 她皱起了眉头。“不过，有些事情看起来不太对劲。” “怎么了?”利迪娅问。 “海浪”。阿比指着最上面的图表。 “它们太长了，不可能是蝙蝠发出的，而且振幅似乎太高了。” 丽迪雅歪着头。“振幅听起来很熟悉。 我们也知道了吗？”艾比点了点头。 “它指的是海浪的高度。 希望没出什么事！也许我没有设置正确的门槛？”丹尼尔看了看妹妹，扬起了眉头。 丽迪雅耸耸肩。她也不明白这一切。 “我们来听听，”丹尼尔说。 艾比点了点头。她的手指悬停在播放按钮上。 就在这时，厨房里响起了刺耳的哨声！他们三个都跳了起来。