Apart from being totally unethical and not morally sound, it is certainly possible that a growing child would almost certainly grow at the same rate as a normal child.

除了不道德和不那么响亮，发育中的儿童自然可以按照一个正常孩子的速度成长。

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It may come as a surprise to some that a normal, healthy child is born with many skills.

一个正常健康的孩子天生具有很多技艺，这对某些人来说可能是个意外信息。

《柯林斯英汉双解大词典》

As a child, you always think your family is quite normal.

作为一个孩子，你总是认为自己的家庭是相当正常的。

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She knew she looked a bit different, and she knew it caused her to be in the hospital a lot, but she had a child's innocence and accepted it as normal.

CNN: A beauty beyond skin deep

Clarifies that parental consent is not necessary for pupils to take part in the majority of off-site activities organised by a school, as most of these activities take place during school hours and are a normal part of a child's education.

BBC: School trip red tape 'to be cut' by Michael Gove