strengthen
strengthened strengthening strengthless strenuous strenuously strenuousness strep strephon strepitoso strepto- streptobacillus streptococcal streptococci streptococcus streptokinase streptolysin streptomycin stress stress mark stress-verse stressful stressless stretch stretch-out stretched stretcher stretcher-bearer stretcher-party stretchiness |
strengthen /'streɳθən/
ngoại động từ
nội động từ
Idioms
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