She stared blankly into space, not knowing what to say next.

她两眼发直，不知道下面该说什么。

《牛津词典》

If you forget what to say next, look at your note carefully, breathe deeply, smile at your listeners, and then go on.

如果你忘了接下来要说什么，请认真看你的笔记，深呼吸，对听众微笑，然后继续讲。

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His response will help you gauge what you should say next.

他的反应可以帮你衡量你接下来应该说的话。

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Market experts say next year India is likely to try to import three million tons of rice tapping the world market for the first time in 21 years because of a drought.

VOA: standard.2009.12.17

There were, and there's a lot of debate about what I'm going to say next, there were protocols of fighting that were followed.

我接下来要说的还有些争议,战争也是有需要遵从的惯例的

耶鲁公开课 - 古希腊历史简介课程节选

Let's say you're having a conversation about what to do next during the day.

假设你正在讨论第二天应该做点什么。

It depends on 课堂 - SpeakingMax英语口语达人

That is because dictation programs try and anticipate what you are likely to say next in order to conserve system resources.

FORBES: Saline tube is a p.m.

You get flustered, and your previously smooth conversational tone and pace becomes temporarily erratic as you attempt to figure out what to say next.

FORBES: How To Master Yourself, Your Unconscious, And The People Around You: Part 5

Liverpool FC fans say next year's season ticket rises are an "insult" to loyal supporters, despite a freeze on ticket prices for the Kop.

BBC: Liverpool FC: Fans call season ticket rise insulting