1.toddler n. 初學(xué)走路的孩子

如：The hyperactive toddler is a real handful. 
這個還在學(xué)走路的卻極其活躍的小孩真是難以控制

A toddler who was a menace in a shop full of crystal. 
對放滿水晶制品的商店構(gòu)成威脅的蹣跚學(xué)步的孩子

The toddler tried to walk but kept falling down. 
那小孩學(xué)著走路但老是跌跤。

2.auditory adj. 聽覺的

如：Capable of learning chiefly from auditory, rather than tactile or visual, stimuli. 
聽象型的可以主要通過聽覺感知，而非通過觸覺或視覺，刺激

Does the child respond to auditory stimuli? ie Does he react to the sounds around him? 
那孩子對聲音有反應(yīng)嗎?

3.cortex n. 外皮，（大腦）皮層

如：A network of extremely small blood vessels passing between the pia mater and the cerebral cortex. 
大腦絨被從軟膜和大腦皮層之間穿過的極細(xì)的小血管形成的網(wǎng)

Having a cortex or a similar specialized outer layer. 
有皮的有皮的或具有相似的專門發(fā)育的外部覆蓋的

4.categorize vt. 分類

如：In information retrieval, a word used to categorize or index information. 
情報［信息］檢索中用于對信息分類或索引的詞。同keyword。