very difficult; severely testing stamina or resolution
physically toughened
substantially made or constructed
violent and lawless
feeling physical discomfort or pain (`tough' is occasionally used colloquially for `bad')
resistant to cutting or chewing
unfortunate or hard to bear
making great mental demands; hard to comprehend or solve or believe
例句
用作形容词 (adj.)
Humans have the tougher time ascending in harmlessness as compared with dolphins and whales. 相比海豚和鲸鱼,人类在提升入无害中有着更困难的时期。
But as climate change causes plants to peak earlier, caribou newborns that eat the plants face tougher odds for survival. 但是当气候变化的原因植物高峰前,北美驯鹿新生儿吃植物面对更困难的机率为了生存。