He is a redoubtable fighter.

他是个厉害的斗士。

《柯林斯英汉双解大词典》

A redoubtable method, and one which, united with genius, rendered this gloomy athlete of the pugilism of war invincible for the space of fifteen years.

那种锐不可当的方法，加上他的天才，便使战场上的这位沉郁的挥拳好汉在十五年中所向披靡。

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A strong continuity of tradition and custom had guided the redoubtable islanders of the far east across the centuries.

传统和习俗的牢固延续，曾经引导这些可畏的远东岛民度过许多世纪。

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It had established Athens as a mighty and redoubtable naval power and it created an unprecedented level of artistic and cultural life even today known simply as Periclean Athens.

建立了雅典强大且令人敬畏的海军强权,而且催生了史无前例的,璀璨艺术与文化生活,甚至今日仍以伯里克利斯的雅典闻名。

耶鲁公开课 - 政治哲学导论课程节选

Like the aliens browsing through refuse for weaponry and food, the film trawls for visual tactics of every kind, from news footage to clips from security cameras, and the result is something new: a startling, redoubtable thriller constructed on the cheap from a decaying world.

NEWYORKER: District 9

For one thing, the senator from Arizona is a redoubtable campaigner.

ECONOMIST: John McCain

Instead, they snipe at his foreign minister, the redoubtable Makiko Tanaka, a woman whose outspokenness is unsettling those who prefer Japan's usual ultra-cautious diplomacy.

ECONOMIST: Japanese politics