toughened 基本解释
坚韧，坚强，强硬( toughen的过去式和过去分词 )；
toughened 网络解释
1. 坚韧的：toughbronze 韧青铜 | toughened 坚韧的 | toughenedglass 钢化玻璃
toughened 英英释义
adj
1. made hard or flexible or resilient especially by heat treatment
e.g. a sword of tempered steel
tempered glass
Synonym: temperedtreatedhardened
2. physically toughened
e.g. the tough bottoms of his feet
Synonym: tough
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