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TOEFL® Vocabulary Practice

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definition: 
Allow (a liquid, gas, or other substance) to flow out from where it has been confined
sentence: 
The station was allowed to discharge sewage into the river during an emergency and was supposed to have alarms fitted to act as a warning when there had been a pump failure, but none of them worked.
difficulty: 
medium
toefl frequency: 
2
toefl classification: