一个实验要重复很多次才能成功 翻成英语？

The success of an experiment needs being repeated several times

An experiment can be successful only after being carried out amny times.

“一个实验’’不能做主语，除非用在被动句中。 所以你的 这个句子可翻译成: You can success on this experice after trying repeatly.

An experiment can be successful only after being repeated several times.