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k12 unit Hello vocab
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cave
hang động
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Independent
tự lập
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tomb
mộ
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worried
lo lắng
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nag
cằn nhằn
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waterfall
thác nước
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mountain
núi
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valley
thung lũng
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difficult
khó chịu
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Easy-going
dễ chịu
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Old-fashioned
lạc hậu
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set the rules
đặt ra luật
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cathedral
nhà thờ
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pagoda
chùa
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Strict
nghiêm khắc
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