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
Keep quiet about it if you know what's good for you.
什么也别说，免得你自个儿添不自在。
They have been much too irresponsible for their high position.
他们虽身居要位，未免太缺乏责任感了。
examined a very large number of men working on aircraft carriers:
调查了许多在航空母舰上工作的人，