He is engaged in a bitter struggle with his rival to get control of the company.

为取得对公司的控制权，他正同对手进行一场激烈的斗争。

《牛津词典》

Everything new comes from the forge of hard and bitter struggle.

一切新的东西都是从艰苦斗争中锻炼出来的。

youdao

Real life, only after extremely hard and bitter struggle to realize.

真正的人生，只有在经过艰苦卓绝的斗争之后才能实现。

youdao

He already was fighting a bitter struggle against rebels in the South.

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Andrew Johnson soon found himself in a bitter struggle with Congress.

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Instead he looks set to be embroiled, for the third time this year, in another bitter struggle.

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Long before this tragedy, daily life itself was often a bitter struggle.

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Qualifying to become a teacher was a long and bitter struggle, he says, but now he feels he has been cheated by the system.

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