Further complicating my college search was a flourishing track career—I wanted to keep running but my times weren't quite fast enough to secure a scholarship.
2018年6月六级真题（第三套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
VERB
使难以理解；使复杂化
To complicate something means to make it more difficult to understand or deal with.