ultrasonic

/ˌʌltrəˈsɒnɪk/ /ˌʌltrəˈsɑːnɪk/

Meanings

adjective

超声波的，超音的

(acoustics) Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher.

Examples :

"The dog whistle emits an ultrasonic sound that humans can't hear, but dogs can. "

这种狗哨会发出超声波的声音，人类听不见，但是狗能听见。

Related Words

whistle noun

/wɪsl̩/

哨子，口哨。

"The train engineer blew the whistle, signaling the start of the journey. "

火车司机吹响了哨子，示意旅程开始。

humans noun

/ˈhjuːmənz/ /ˈjuːmənz/

人类，人们，人。

"Humans share common ancestors with other apes."

人类与其他猿类拥有共同的祖先。

emits verb

/ɪˈmɪts/

发出，散发。

"The fire emits heat and smoke. "

这火发出热和烟。

range noun

/ɹeɪndʒ/

山脉，范围。

"The hikers walked along the entire mountain range. "

徒步者们沿着整条山脉走了很远。

human noun

/ˈhjuː.mən/ /ˈ(h)juː.mən/ /ˈ(h)ju.mən/

人类，人。

"Humans share common ancestors with other apes."

人类与其他猿类拥有共同的祖先。

beyond noun

/biˈjɒnd/ /biˈjɑnd/

未知，未知的世界

"The teacher encouraged the students to explore the beyond of current knowledge in science. "

老师鼓励学生们探索科学领域中未知的世界。

frequency noun

/ˈfɹiːkwənsi/

频率，频度.

"The frequency of bus service has been improved from one every 15 to one every 12 minutes."

现在公交车的发车频率提高了，从原来的每15分钟一班改为每12分钟一班。

higher adjective

/ˈhaɪə/ /ˈhaɪɚ/

更高，较高的

"The balloon rose high in the sky. The wall was high. a high mountain"

气球在空中越升越高。墙很高。一座高山。

acoustics noun

/əˈkuːstɪks/

音响效果，声学效果。

"The acoustics in the concert hall were so good that every note sounded clear and vibrant. "

那个音乐厅的音响效果太棒了，每个音符都听起来清晰而充满活力。

perceptible noun

/pəˈsɛptɪbl̩/ /pɚˈsɛptəbl̩/

可感知物，可察觉之物

"The only perceptible was the faint sound of the clock ticking in the otherwise silent room. "

在寂静的房间里，唯一可察觉的就只有钟表那微弱的滴答声。

sound adjective

/saʊnd/

健壮的，健康的。

"He was safe and sound."

他安然无恙，身体也很健康。

kilohertz noun

/ˈkɪləˌhɜːrts/ /ˈkɪloʊˌhɜːrts/

千赫，千赫兹

"The radio station broadcasts at a frequency of 980 kilohertz. "

这家电台以980千赫的频率广播。