zhè / xiàng / yán / jiū / zài / xué / lǐ / shàng / shì / chéng / lì / de / dàn / hái / xū / yào / gèng / duō / shù / jù / zhī / chí

这项研究在学理上是成立的，但还需要更多数据支持。

This research is theoretically sound, but it still needs more data to support it.