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    constantly

    US /ˈkɑnstəntlɪ/

    UK /ˈkɒnstəntli/

    • Adverb
    • Frequently, or without pause
    • In a way that is unchanging or faithful
    strength

    US /strɛŋkθ, strɛŋθ, strɛnθ/

    UK /streŋθ/

    • Noun (Countable/Uncountable)
    • Condition of being strong
    • The quality or state of being physically strong.
    A2TOEIC
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    effective

    US /ɪˈfɛktɪv/

    UK /ɪˈfektɪv/

    • Adjective
    • Working efficiently to produce a desired result
    • In operation; in force.
    A1TOEIC
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    proper

    US /ˈprɑpɚ/

    UK /'prɒpə(r)/

    • Adjective
    • Correct according to social or moral rules
    • Behaving in a polite and socially acceptable way.
    A2TOEIC
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