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to phrases
strengthening ['strεŋθnɪŋ] v
transp., construct. versterking; verzwaring
to strengthen ['streŋθ(ə)n] v
gen. aanscherpen; aanscherping
strengthened: 35 phrases in 14 subjects
Agriculture1
Chemistry1
Communications2
Construction2
Economy1
Finances1
Fish farming pisciculture1
General6
Industry8
International trade1
Law1
Metallurgy1
Religion1
Transport8