英语语法分析

Because they cannot verbalize or fill out questionnaires, indirect techniques of naturalistic observation are used as the primary means of determining what infants can see, hear, feel, and so forth.

由于婴儿不能用语言表达或填写调查问卷，自然观察法的间接技巧被用来作为判断他们能看到、听到、感觉到什么等等的主要手段。

Watch out for how they verbalize with others.

注意他们是如何与他人交谈的。

Feelings are often very difficult for you to verbalize.

感情往往是你很难用语言表达。