英语语法分析

Many factors can lead to growth retardation in unborn babies.

许多因素可以导致胎儿发育迟缓。

《牛津词典》

Acute exposure to lead may impact mice behavior altering such as irritability, hyperkinesis, retardation of learning and memory, etc.

急性铅暴露可能影响小鼠的行为改变，如易怒、运动亢进、学习和记忆迟钝等。

Studies show that iodine deficiency is the leading preventable cause of mental retardation.

研究显示，缺碘是智力发育迟缓的一个主要但可预防的因素。