Level A1 : READ LISTEN TRANSLATE RANDOM
Level A2 : READ LISTEN TRANSLATE
Level B1 A: READ LISTEN TRANSLATE
Level B1 B: READ LISTEN TRANSLATE

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essential component wesentlicher Teil essentieel onderdeel composante essentielle componente essenziale componente esencial องค์ประกอบที่สำคัญ thành phần thiết yếu 重要组成部分
substantial part Wesentlicher Teil substantieel deel partie substantielle parte sostanziale parte sustancial ส่วนสำคัญ Phần đáng kể 实质部分

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Compounds:

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HSK5000 A1+A2+B1

HSK5000 B2 + C1