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consultivorum
(使)变坚韧 biàn jiānrèn

toughen [ˈtʌfən] VERBO trans, intr (up)

toughen
(使)坚韧 biàn jiānrèn
toughen
(使)强硬 biàn qiángyìng
toughen
(使)困难 biàn kùnnan
Present
Itoughen
youtoughen
he/she/ittoughens
wetoughen
youtoughen
theytoughen
Past
Itoughened
youtoughened
he/she/ittoughened
wetoughened
youtoughened
theytoughened
Present Perfect
Ihavetoughened
youhavetoughened
he/she/ithastoughened
wehavetoughened
youhavetoughened
theyhavetoughened
Past Perfect
Ihadtoughened
youhadtoughened
he/she/ithadtoughened
wehadtoughened
youhadtoughened
theyhadtoughened

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Exemplos unilingues (não verificados pela redação)

This fire is used to dry and toughen the young wings, which is necessary for flight.
en.wikipedia.org
Tony tells him to stop and reaffirms his decision, saying that he needs toughening up.
en.wikipedia.org
It quickly toughens up and can withstand drought even whilst in forestry tubes.
en.wikipedia.org
Compressed at and cured for in a steam bath, then toughened with an air entrainment agent, the bricks last for more than cycles.
en.wikipedia.org
All those who passed through that testing have been toughened.
en.wikipedia.org