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to phrases
grade down
['greɪd'daun]
tech.
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按比例折减
grade down:
27 phrases
in 12 subjects
Bridge construction
2
Business
2
China
1
Communications
1
Construction
1
Drilling
3
General
4
Hydroelectric power stations
1
Rail transport
1
Technology
8
Telecommunications
2
Wind Energy
1
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