“用言语表达”常见的英文表达有 express in words 或 put into words。
express in words：侧重于通过言语将内心的想法、感受等清晰地说出来或写出来。例如：It's hard to express in words how grateful I am.（很难用言语表达我有多么感激。）
put into words：强调把难以言表的东西转化为具体的语言表达。例如：Some emotions are so complex that it's difficult to put them into words.（有些情感如此复杂，很难用言语表达出来 。 ）