The seed suppliers tell me things will be better next year, but I am not certain I trust them.

种子供应商告诉我明年情况会更好，但我不确定是否能相信他们。

youdao

I am not certain about it.

我也不确信这个消息。

youdao

I am not certain what I ought to do.

我无所不能确定我该做什么。

youdao

It was a long time ago and I am not certain but I think the topic was Intel.

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However, I am not certain we lack the political capacity (certainly one could argue the misguidedness of Dem and Rep political will) to work together.

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Not only am I fairly certain of this, I'd guarantee it (and I'm not in the habit of guaranteeing many things).

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