But this was rejected out of hand, largely because the savannah theory was considered unchallengeable.

但这一想法立刻遭到否定，很大程度上是因为大草原理论在当时不容挑战。

youdao

In historical aspects and that of language acquisition, the importance of grammar teaching is unchallengeable. Its role changes from the dominant position to the subordinate one.

从历史的角度和语言习得的角度来看，语法教学的必要性是不容置疑的，只不过是它的作用从主导地位转为辅助地位。

youdao

In historical aspects and that of language acquisition, the importance of grammar teaching is unchallengeable. Its role changes from the dominant position to the subordinate one.

从历史的角度和语言习得的角度来看，语法教学的必要性是不容置疑的，只不过是它的作用从主导地位转为辅助地位。

youdao