时差N小时 胎儿能听到什么声音?(下)

As many expectant mothers know, a sudden car horn can start a etus kicking.

就如许多准妈妈知道的那样，突如其来的汽车喇叭声也能引起胎儿的踢动。

Not only can fetuses² hear outside noises, they sometimes remember what they've heard.

胎儿不仅能够听到外界的声音，他们有时也会记住他们所听到的。

One study found that infants who repeatedly heard a soap opera theme song in the womb reacted positively³ when they heard that same music after birth.

一项研究发现，婴儿出生后，会对在子宫里反复听到的肥皂剧的主题曲做出积极的反应。

Perhaps this ability to remember helps a newborn recognize its mother's voice.

或许这种记忆能力帮助一个新生儿认出母亲的声音。

A fetus¹ can't hear specific words or intonation–these are too muffled⁴. Instead, they remember the rhythm of their mothers' voices.

胎儿不能听到具体的词或者声调-这些都太低沉了。相反地，他们记得住母亲声音的节奏。

To check this out, researchers gave newborns a special nipple rigged to a tape recorder.

为了验证这一点，研究人员给了新生儿一个特殊的与录音机相连的奶嘴。

By changing the way they sucked, these infants could modify the cadence⁵ of a prerecorded voice.

通过变换他们吸允的方式，这些婴儿能够改变预先录制的语音节奏。

Eighty percent of these newborns sucked in the way that produced a voice with their mother's specific rhythm.

百分之八十的新生儿吸吮时的声音与母亲声音的特定节奏一致。

1 fetus   

n.胎，胎儿

参考例句：

• In the fetus,blood cells are formed in different sites at different ages.胎儿的血细胞在不同时期生成在不同的部位。
• No one knows why a fetus is not automatically rejected by the mother's immune system. 没有人知道为什么母亲的免疫系统不会自动排斥胎儿。

2 fetuses   

n.胎，胎儿( fetus的名词复数 )

参考例句：

• DNA was extracted from fetuses at mid-gestation, about 10 days past conception. DNA从受孕大约10天后的中期妊娠胚胎中提取。 来自互联网
• Brucellosis is a disease that causes fetuses to abort in cattle. 普鲁士菌病是一种可以导致牲畜胎儿夭折的疾病。 来自互联网

3 positively   

adv.明确地，断然，坚决地；实在，确实

参考例句：

• She was positively glowing with happiness.她满脸幸福。
• The weather was positively poisonous.这天气着实讨厌。

4 muffled   

adj.（声音）被隔的；听不太清的；（衣服）裹严的；蒙住的v.压抑，捂住( muffle的过去式和过去分词 )；用厚厚的衣帽包着（自己）

参考例句：

• muffled voices from the next room 从隔壁房间里传来的沉闷声音
• There was a muffled explosion somewhere on their right. 在他们的右面什么地方有一声沉闷的爆炸声。 来自《简明英汉词典》

5 cadence   

n.（说话声调的）抑扬顿挫

参考例句：

• He delivered his words in slow,measured cadences.他讲话缓慢而抑扬顿挫、把握有度。
• He liked the relaxed cadence of his retired life.他喜欢退休生活的悠闲的节奏。