She said it with a straight face.

她板着脸说了这件事。

youdao

He can never tell a joke with a straight face.

他总是无法面无表情地说笑话。

youdao

He told me this with a straight face but watched my eyes closely as he spoke.

说话时表情毅然决然，但在和我眼神接触时闭着双眼。

youdao

That permits people to cite it as a model with a straight face eight decades after it was enacted?

让人们引以为典范,以严肃的态度认为,即使这个新政已是八十年前的事情了？

斯坦福公开课 - 经济学课程节选

Quite how anyone could suggest this with a straight face I am not sure.

FORBES: European Union Peace Prize: Nobel Committee Jumps The Shark

He stood up and with a straight face said it wouldn't be appropriate for him to give stock tips.

CNN: ASIANOW - TIME Asia

"It's the Paris-Dakar rally of birding, " says spokesman John Bianchi, of the National Audubon Society, with a straight face.

FORBES: Wings of Desire