Since long , many theorist have fervidly studied this theme, and put forward a lot of value viewpoints .

长期以来，许多理论家都热衷于探讨这一主题，提出了许多有价值的理论观点。

youdao

Since long , many theorist have fervidly studied this theme, and put forward a lot of value viewpoints .

长期以来，许多理论家都热衷于探讨这一主题，提出了许多有价值的理论观点。

youdao