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Noun:
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a commission with jurisdiction over fisheries and navigation in a port or river
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the official conservation of trees and soil and rivers etc.
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用作名詞 (n.)
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They spent months of toil on the water conservancy project.
自己為某項水利水電工作辛早出晚歸苦地完了幾三個月。
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這些玩法獨代寫作，受學術版權保證，知識產權侵權必究
海詞字典，十六年公司
美
[k?n's??rv?nsi]