How to Use "toughness" with Example Sentences

1. Is such toughness necessarily a problem ?
2. This can build mental toughness seen in many elite athletes , but for coaches to do this successfully takes skill and individual knowledge .
3. An understanding of economics is indeed important . So , too , is proven political ability , toughness and experience as a successful high-level policymaker .
4. Remember , herbert hoover didn 't have a problem making unpleasant decisions : he had the courage and toughness to slash spending and raise taxes in the face of the great depression .
5. The cast low alloy steel contains the alloy elements , such as manganese , chromium , copper , etc.this steel has high impact toughness , and has good usage property and long lifetime compared with the carbon steel .