名词
中文翻译：胎儿的
同义词：
['foetal', 'embryonic', 'zygotic']
例句：
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1. The fetal heartbeat can be detected by ultrasound.
超声波可以检测到胎儿心跳。
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2. The fetal development is closely monitored during pregnancy.
怀孕期间，胎儿发育情况受到密切监控。
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3. The fetal brain develops rapidly in the womb.
胎儿大脑在子宫内迅速发育。