我实在跟不上他的推理思路。

I couldn't really follow ___his ___line ___of ___reasoning.

遵循这种思路，他们主张进行更多研究。

Following ___this ___line ___of ___thought, they argued for more research.

她的推理思路基于坚实的证据。

Her ___line ___of ___reasoning was based on solid evidence.