Level A1 :
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RANDOM
Level A2 :
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Level B1 A:
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Level B1 B:
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| (IELTS4000) tube | Definition: hollow cylindrical shape; underground railway |
| (ESS4000) tube | Definition: A tube is a pipe through which water or air passes. | Example: →The pile of tubes was going to be put in the ground. |
| A1 | tube | noun |
ống, tuýp 3000
tube | HSK5000 A1+A2+B1 |
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| HSK5000 B2 + C1 |
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