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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clandestinely heimlich clandestien clandestinement clandestinamente clandestinamente อย่างลับๆ giấu giếm 偷偷地
covertly heimlich heimelijk secrètement di nascosto encubiertamente อย่างลับๆ lén lút 隐蔽
cryptically kryptisch cryptisch cryptiquement cripticamente crípticamente อย่างลับๆ khó hiểu 隐晦地

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Compounds:

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HSK5000 A1+A2+B1

HSK5000 B2 + C1