I'm speechless to know that so many people are behind me.

知道这么多人在我身后，我无语了。

youdao

Write down (and remember) the questions you want to ask the interviewer(s) so that you are not speechless when they invite your questions.

把要询问考官的问题写下来或记住，这样当他要你提问时不至于无话可说。

youdao

I then looked at Blake, who appeared so petrified he was speechless.

我看了看布莱克，他已经被吓呆了，说不出话来。

youdao

Many had money, and some of them had so much money that it left you speechless.

CNN: ASIANOW - TIME Asia | Young China | The Pen is Nastier Than the Sword--Page 2

We had so much good stuff this week it almost left me speechless.

FORBES: Leadership Highlights of the Week

So, too, will the footage of present captain Sam Torrance, speechless with rage moments after premature and ill-mannered USA triumphalism had stamped all across Jose Maria Olazabal's line on the 17th green.

BBC: Sport's last ambassador