This may require learning time and training.
这可能需要学习和培训。
The teaching and learning system of sing english training program.
第一部分：歌唱英语速成教学体系。
Research on the Military Geography Teaching and Training System in e-Learning Environment;
唐代关内道军事地理，是当前学术研究中相对薄弱的一块“阵地”。
Research on the Military Geography Teaching and Training System in e-Learning Environment;
唐代关内道军事地理，是当前学术研究中相对薄弱的一块“阵地”。
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