I. tough·en [ˈtʌfən] 动词 trans
1. toughen (strengthen):
- to toughen sth
- etw verstärken
| I | toughen |
|---|---|
| you | toughen |
| he/she/it | toughens |
| we | toughen |
| you | toughen |
| they | toughen |
| I | toughened |
|---|---|
| you | toughened |
| he/she/it | toughened |
| we | toughened |
| you | toughened |
| they | toughened |
| I | have | toughened |
|---|---|---|
| you | have | toughened |
| he/she/it | has | toughened |
| we | have | toughened |
| you | have | toughened |
| they | have | toughened |
| I | had | toughened |
|---|---|---|
| you | had | toughened |
| he/she/it | had | toughened |
| we | had | toughened |
| you | had | toughened |
| they | had | toughened |
无例句可用
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单语范例（未经PONS编辑处理）
The metallic details toughen up an otherwise very femme dress.
www.dailymail.co.uk Curing is a technique done to toughen up the outer layer of skin (periderm).
en.wikipedia.org It is alright for us to say ignore it, get used to it, toughen up.
www.grimsbytelegraph.co.uk People need to toughen up and grow some thicker skin.
variety.com Just give the players a break and let them toughen up.
www.espncricinfo.com