我不明白他们怎么能在短时间内取得如此大的进步的翻译：I do not understand how can they have achieved so much in a short time of progress 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

I do not understand how they can achieve in a short time so much progress

I do not understand how can they have achieved so much in a short time of progress

I did not understand how they can make the so big progress in a short time

I do not understand how they can be achieved in a short time such progress

I do not understand how can they have achieved so much in a short time of progress