1
have an ultrasound
这里的 an ultrasound 指一次超声波检查，常用搭配是 have/undergo an ultrasound。
She had an ultrasound to check the health of the fetus.
她做了超声波检查，以检查胎儿的健康状况。
超声；超声波
ultrasounds — plural of ultrasound
先理解核心含义，再看它在真实句子里的用法。
超声；超声波
very high frequency sound, especially one used in ultrasonography
She had an ultrasound to check the health of the fetus.
她做了超声波检查，以检查胎儿的健康状况。
频率高于人类听觉上限(约20千赫)的声波
Sound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz.
非常高频的声音；用于超声波检查
very high frequency sound; used in ultrasonography
治疗用超声波
Therapeutically applied ultrasonic energy.
利用高频声波反射构建身体器官图像(超声图)；常用于观察胎儿生长或研究身体器官
using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs
The doctor used ultrasound to produce a clear image of the baby.
医生使用超声波来生成胎儿的清晰图像。
She was scheduled for an ultrasound to check her kidneys.
她预约了超声波检查，以检查肾脏。
Many clinics use ultrasound because it avoids unnecessary radiation.
许多诊所使用超声波，因为它能避免不必要的辐射。
这里的 an ultrasound 指一次超声波检查，常用搭配是 have/undergo an ultrasound。
She had an ultrasound to check the health of the fetus.
她做了超声波检查，以检查胎儿的健康状况。
ultrasound 后可接 of 短语指明检查部位，如 ultrasound of the liver。
The doctor arranged an ultrasound of her abdomen.
医生为她安排了腹部超声波检查。
作不可数名词时，ultrasound 意为'超声波'，常与 be used to do 连用说明用途。
Ultrasound is used to diagnose kidney stones.
超声波用于诊断肾结石。
Not this
I need to have ultrasound to check the baby.
Use this
I need to have an ultrasound to check the baby.
在表示“超声波检查”时，ultrasound 是可数名词，前面需要不定冠词 an。汉语没有冠词，所以容易漏掉。
Not this
The tumor was visible under ultrasound.
Use this
The tumor was visible on ultrasound.
表达“在超声图像上”时，英语用介词 on，固定搭配是 on ultrasound。受汉语“在……下”的影响，学习者容易误用 under。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
超声扫描
The doctor ordered an ultrasound scan to check her pregnancy.
医生让她做超声扫描以检查怀孕情况。
超声成像
Ultrasound imaging is often used to examine the liver and kidneys.
超声成像常用于检查肝脏和肾脏。
超声检查
An ultrasound examination takes about 30 minutes.
一次超声检查大约需要30分钟。
超声探头
The technician placed the ultrasound probe on the patient's abdomen.
技师将超声探头放在病人的腹部。
多普勒超声
Doppler ultrasound is used to measure blood flow through the vessels.
多普勒超声用于测量血管中的血流。
产前超声检查
Prenatal ultrasounds help monitor the development of the fetus.
产前超声检查有助于监测胎儿的发育。
Use ultrasounds naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：ultra（超出）+ sound（声音）→ 超出人耳可听范围的声音，即超声波。
语域：neutral 常见场景：medical imaging、obstetrics、acoustics 该词通常为中性用语，多用于医学检查（如产科超声）和声学技术等场景；正式书面语与日常口语中都较常见。
These six words all rhyme with the stressed syllable /saʊnd/ of ultrasound: sound, around, ground, found, pound, hound. Watch out for ultraviolet: it shares the ultra- spelling but is pronounced /ˌʌltrəˈvaɪələt/ and does not rhyme.
Dictionary facts from ECDICT, WIKTIONARY.