Fetal heart sounds
[医] 胎儿心音
🧩 词语组成解析
fetal
['fi:tl]
adj. 胎儿的，胎的;
heart
[hɑrt]
n. 心，心脏;感情;要点;胸部;
vt. 鼓励;激励;
vi. 结心;
n. 音效, 声音（sound的复数）
🗣️ 情景例句
Don't mention it.
别在意。
The man is surveying land for a national park.
这个人正在测量国家公园的土地
it takes much less energy to accelerate to that 1.5 miles per second than it does on Earth.
在月球上加速到每秒1。5英里比在地球上所用能源要少得多。