I can "t express myself in Ennglish."

我不能用英语很好表达自己。

youdao

I can 't express how grateful I am to you.

我无法表达我对你多么感激。

youdao

I can "t express myself very well in English."

我不能用英语很好地表白本人的意思。

youdao

Now if that's what they mean,then--a small observation-- they didn't express themselves very clearly.

如果这就是他们的意思，小小观察一下-,他们并没有把自己表达地很清楚。

耶鲁公开课 - 死亡课程节选

You can also use it to express things that you don't want to have happened.

你也可以用它来表达那些你不希望发生的事情。

I wish 课堂 - SpeakingMax英语口语达人

I guess they didn't have our language, they didn't-- they were intuitively halfway there but they couldn't express it, so I think the industry didn't get really started.

我猜当时并没有专业的词汇,他们未能...,他们有想法,却无法表述,所以我认为那只是保险业的雏形

耶鲁公开课 - 金融市场课程节选

Dancing can express beautifully some things that we can't express with words, but very basic things.

WSJ: Ballet's Alexei Ratmansky Has the Right Moves

That's not to say some on our Most Promising list didn't express a bit of caution.

FORBES: America's Most Promising Companies

Words truly can't express how much we appreciate your prayers and love for our family at this sensitive time.

BBC: Donna Summer, queen of disco, dies at 63