通过沉浸式视觉效果和人工智能掌握词汇
振幅，幅度。
"The amplitude of the child's swing showed how high it went on each push. "
孩子荡秋千的幅度显示了每次推动后秋千能荡多高。
总是，一直，始终。
"My younger brother is still very energetic, even after a long day at school. "
即使在学校上了一整天课，我弟弟还是一直精力充沛。
超声波，超音波
"The doctor used ultrasounds to check the baby's development in the womb. "
医生用超声波检查胎儿在子宫里的发育情况。
超外差接收机，超外差收音机。
"My grandfather, a ham radio enthusiast, still prefers working with superhets because of their superior sensitivity to weak signals compared to newer receiver designs. "
我爷爷是个业余无线电爱好者，他仍然喜欢用超外差收音机，因为相比新的接收机设计，它们对微弱信号的灵敏度更高。
子载波
"The FM radio station uses subcarriers to broadcast traffic updates and weather information in addition to its regular music programming. "
这家调频广播电台除了播放常规音乐节目外，还使用子载波来广播交通信息和天气预报。
低沉的，沉闷的
"Generally, European men have lower voices than their Indian counterparts."
一般来说，欧洲男性的嗓音比印度男性更低沉。
短波
"Shortwaves are longer than microwaves."
短波比微波的波长更长。
低沉，沉闷。
一般来说，欧洲男性的声音比印度男性更低沉。
波特，波德。
"The old modem transmitted data at 300 baud, meaning it sent 300 signals per second. "
老的调制解调器以300波特的速率传输数据，也就是每秒发送300个信号。
波段，频带
"Different wireless devices, like phones and Wi-Fi routers, operate on different bands of the electromagnetic spectrum to avoid interference. "
为了避免互相干扰，像手机和无线网络路由器这样的不同无线设备会在电磁频谱的不同频段上工作。
通常，经常
"Professor Franklein is habitually pessimistic."
弗兰克林教授总是习惯性地持悲观看法。
声谱图，语谱图。
"The teacher used a spectrogram to show how the different frequencies in the student's singing voice changed over time. "
老师用语谱图展示了学生歌声中不同频率随时间变化的情况。
重复的，反复的。
"The meeting was repetitive; the same points were discussed over and over again. "
会议内容很重复，同样的要点被一遍又一遍地讨论。
子载波，副载波
"The radio station uses a subcarrier to transmit song lyrics and artist information alongside the music. "
这家电台使用子载波，在播放音乐的同时传输歌词和歌手信息。
高场，低频。
"The NMR spectrum showed the sample's hydrogen atoms had an upfield resonance compared to the standard reference. "
核磁共振谱显示，与标准参考信号相比，该样品氢原子的共振峰位于高场，频率较低。
搏动，跳动
"The flashing light on the emergency vehicle began to pulsate, growing brighter and then dimmer in a steady rhythm. "
急救车上的闪光灯开始有节奏地闪烁，亮度一下增强，一下减弱。
两次，两回
"My sister practiced her piano piece twice before the recital. "
我妹妹在演奏会之前把钢琴曲练习了两次。
占空比，脉冲占空系数。
"The robot vacuum cleaner's effectiveness depends on its duty cycles, as longer periods of operation mean more dirt is collected. "
扫地机器人的清洁效率取决于它的占空比，因为工作时间越长意味着能清理更多的灰尘。
失谐，调偏。
"The technician had to detune the circuit to match the incoming radio signal's frequency. "
技术员不得不让电路失谐，使其谐振频率与接收到的无线电信号频率相匹配。
基频，基波。
"The fundamentals of a musical note determine its perceived pitch. "
一个音符的基频决定了我们听到的音高。
