1. 形容詞
   最剛強的, 最堅強的
   最不屈不撓的
   最堅韌的
   (指最堅韌、最牢固)更強硬的
   最結實的, 最強壯的
   最固執的, 最頑固的
   最牢固的
   最費勁的
   最棘手的
   最艱苦的, 最艱難的
   

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   同義字詞
   chewy,leathery
   cast-iron,hard,hard-bitten,hardened,hardy,inured,rugged,stout,strong,sturdy,toughened,vigorous
   bitter,brutal,burdensome,cruel,excruciating,grievous,grim,hard,harsh,heavy,inhuman,murderous,onerous,oppressive,rough,rugged,searing,severe,stiff,trying
   arduous,Augean,backbreaking,challenging,demanding,difficult,effortful,exacting,formidable,grueling,gruelling,hard,heavy,herculean,killer,laborious,moiling,murderous,rigorous,rough,rugged,severe,stiff,strenuous,sweaty,tall,testing,toilsome,uphill
   catchy,delicate,difficult,hairy,knotty,nasty,prickly,problematic,problematical,sensitive,spiny,sticky,thorny,ticklish,touchy,tricky
   austere,authoritarian,flinty,hard,harsh,heavy-handed,ramrod,rigid,rigorous,severe,stern,strict
   

例句

1. This was the toughest call on the board .
2. I found it to be the toughest ride of all.
3. Hers is one of the toughest jobs in the show.
4. They take the toughest of the toughest cases.
5. The mental hurdle is always the toughest one .
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