hardiest
adj.
能吃苦耐劳的，坚强的( hardy的最高级 );
（植物等）耐寒的;
例句:
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This trip will season even the hardiest traveller.
这个旅行会让最坚硬的旅行者适应.
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Bangladesh's hardiest rice, sown back in January and known as the "boro" crop, is now being harvested.
来自VOA
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Varieties sold as pot plants are not the hardiest, so buy proper hardy varieties.
来自THETIMES
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Only the hardiest strains "freaks of nature," Calagione calls them can produce the most potent beers.
来自NEWYORKER