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二级的
gen.	second-order
avia.	second order
hydroel.st.	two-stage
sport.	secondary
tech.	secondary order; second class; second-level
二〔两，双〕级的
gen.	two-stage; two-step
二〔两〕级的
gen.	two-level
二〔双〕级的
gen.	double-stage
二级次的
auto.	secondary

二级的: 35 phrases in 13 subjects

Agriculture	2
Business	1
Ceramics	1
Ecology	1
Economy	3
Finances	1
General	6
Genetics	2
Management	1
Sports	1
Steel production	2
Technology	11
Water resources	3