我现在不能确定这个过程需要多长时间的翻译：I'm not sure how long this process takes 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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I'm not sure how long this process takes

I cannot determine now this process needs the long time

I am now unable to determine this process requires many long hours

I'm not sure how long this process takes