đê quai vạc
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Meaning
1 senses
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A secondary dike constructed in a loop around vulnerable points to provide extra protection for a main dike.
vi Họ đang khẩn trương đắp đê quai vạc để bảo vệ làng mạc khỏi lũ lụt.
en They are urgently building a loop dike to protect the village from flooding.