鲁达
Be lost for words
=to be unable to say anything because you are very surprised，upset etc
[因为很吃惊，伤心等]说不出话来，不知道说什么好。
I was astonished/to have been given the award。for once in my life，I was lost for words。。
我很惊讶能获得这个奖。生平第一次，我不知道该说什么。
单词对单词(句尾)
if you repeat something word for word，you repeat it exactly as it was originally said or written .
I don ' t try to memorize speeches/word for word。
我不会逐字背诵那些演讲。
Beyond words无法用语言表达。难以用语言表达。
when our parents/offered to help us/buy our first home，we were appreciative/beyond words
当我父母帮我们买第一套房时，我们的感激无法用语言表达。