单词bidirectionality
网络: 双向性；双向式；双向的
Unicode does in fact support bidirectionality, and using the ITS dir tag you can declare the intended directionality of a piece of text.
Unicode确实支持双向性，利用ITSdir标记可以声明文本片段的方向要求。
On the Bidirectionality of the Token - Value Relationship of the English Identifying Clause
论英语识别小句中的标记-价值关系的双向性