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now and again; ever and anon; ever and again; every now and again; every now and then; every now and then; every now and again; off and on; on and off; sometimes; from time to time |
不时地: 16 phrases in 10 subjects |
Ceramics | 1 |
Economy | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
Finances | 1 |
General | 6 |
Mechanic engineering | 1 |
Project management | 1 |
Sports | 2 |
Technology | 1 |
United Nations | 1 |