她张开嘴想喊，但喊不出声来。

Her lips parted in a soundless scream.

《牛津词典》

他试图说话，但这一次，他已说不出声。

He tried to speak, but for once, his voice had left him.

《柯林斯英汉双解大词典》

他不出声地朝我们骂了几句脏话然后离去。

He mouthed a few obscenities at us and then moved off.

《牛津词典》

it says "The pickup truck slowed even more, as if it were reading the sign, Haze his empty horn.

就像看见了标牌一样，载货卡车进一步放慢了速度，又开始按那个，and，Haze，pounded,不出声的喇叭。

耶鲁公开课 - 1945年后的美国小说课程节选

And the movie is so sad that you can't stop from crying really loudly

这部电影太令人感伤了，你控制不住地哭出声来。

I can't help but 课堂 - SpeakingMax英语口语达人

Secondly, as we go to the more advanced part of the course, we'll take a result from this part of the blackboard, stick it into the second part and keep manipulating, so if I screwed up in the beginning and you guys keep quiet, we'll have to do the whole thing again.

其次,随着我们课程的深入,我们需要把黑板这边的计算结果,抄到黑板的那边,不停地这么做,如果我一开始就写错了,而你们又不出声,我们就得全部重新来过

耶鲁公开课 - 基础物理课程节选