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to phrases
wall back
hydroel.st.
墙背
wall back
:
68 phrases
in 15 subjects
Architecture
2
Automobiles
7
Bridge construction
4
Desert science
1
Ecology
1
Engineering geology
3
Figurative
2
General
5
Hydroelectric power stations
5
Metallurgy
11
Refrigeration
1
Scuba diving
2
Sports
1
Technology
22
Textile industry
1
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