英语翻译:他能成功是由于他的努力.(主要是中间“由于”那个过度的词)

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英语翻译:他能成功是由于他的努力.(主要是中间“由于”那个过度的词)

His success is due to his hard-working.
or you can use because of...

His success due to his efforts

His success is due to his hard-working.

He can be successful because of all his hard efforts.