frequency of training

同义词释义

1)frequency of training,训练次数、频率应如何2)duration of training,训练的时间及期间应如何3)Listening Training of CET Band 6,如何训练六级听力4)How to Enhance Listening Training,如何抓好听力训练5)How to practise chorus,浅议如何训练合唱6)How often?,发生频率如何？