toughen
v. 变坚韧；变健壮；变顽固
名词：toughener 过去式：toughened 过去分词：toughened 现在分词：toughening 第三人称单数：toughens
近义词：strengthen，harden，buildup，reinforce，fortify，shoreup，beefup，firmup，acclimate，steel，
英英释义
Verb
- make tough or tougher;
"This experience will toughen her"
例句
用作动词(v.)
- This experience will toughen her.这次经历会让他变坚韧。
- The company leader said that army life would toughen the recruits up.连长说军队生活可以使新兵锻炼得更坚强。
- All this mountain climbing will toughen the boys up.这些爬山运动会把孩子们锻炼得身强体壮。