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at intervals
gen. 时时; 有时; 断断续续; 每隔一段时间〔距离〕; 处处
econ. 不时; 间隔一定的距离
at intervals
: 39 phrases in 10 subjects
Business1
China3
Commerce2
Economy6
Finances1
General14
International trade1
Rail transport2
Skiing2
Technology7