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Forvo
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noun
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verb
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to phrases
toughening
['tʌfniŋ]
n
met.
revenido
m
toughening
v
industr., construct., met.
temple
toughen
['tʌf(ə)n]
v
gen.
endurecer
toughening:
15 phrases
in 7 subjects
Chemistry
1
Electronics
1
Health care
1
Industry
7
Information technology
1
Metallurgy
1
Transport
3
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