verbal
adj
1 of or in words 词语的; 言语的; 文字的; 用言语的; 用文字的
verbal skills, ie reading and writing 阅读和书写的技能
non-verbal communication,ie gestures, facial expressions, etc 非言语交际(手势、 面部表情等).
2 spoken, not written 口头的(非书面的)
a verbal explanation, agreement, warning, reminder, etc 口头解释、 协议、 警告、 提示等.
3 word for word; literal 逐字的; 一字不差的
a verbal translation 逐字的翻译.
4 (grammar) of verbs 动词的: a noun performing a verbal function 起动词作用的名词.
I suggest that we ask users of this machine what they think about it. We can photograph them using it too. Then we can put their comments at the top of the advertisement in big print. We can bring in some humour too. People enjoy reading humorous ads.