求翻译：同时，就其研究的具体内容来看，大多数相关研究都主要是对两种教学法各自的阐述，描述其定义、特点、历史渊源及演进，以及各自的优缺点(Stern， H.H.， 1983;农同亮，王年英，卢少雯，2006;王东波，2004)，是什么意思？

The same time, the specific content of their research, most studies are mainly two kinds of teaching elaborated, describing its definition, characteristics, historical origins and evolution, as well as their advantages and disadvantages (to Stern, hh, 1983; agriculture with bright, king of the Anglo

Meanwhile, on the study of specific content, most of the related research are primarily of two teaching methods described in the respective description of its definition, characteristics, history and evolution, as well as their respective advantages and disadvantages (Stern H, H . ., 1983; Wang, wit

At the same time, its research concrete content looked that, the majority correlation research all mainly is to two teaching method respective elaborations, describes its definition, the characteristic, the historical origin and the evolution, as well as respective good and bad points (Stern, H.H.,

At the same time, its study of specific content, most of the relevant research is mainly on each of two teaching methods, and describes its definition, characteristics, origin, and evolution, as well as their respective advantages and disadvantages (Stern,H.H.,1983; lit, Wang Nianying, Lu Shaowen, 2

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