英语语法分析

This paper questions the validity of the claim that intra-sentential cataphoric reference is unidirectional.

本文对“句内后照应单向性”论点的有效性提出质疑。

This paper questions the validity of the claim that "intra-sentential cataphoric reference is unidirectional".

本文对“句内后照应单向性”这一论点的有效性提出质疑。

Channels can be unidirectional or bidirectional.

通道可以是单向的或双向的。