scratch the surface
只是表面涉及，没有深入探索或了解
书面·强调研究或理解不深入
英文释义
to only explore or understand a small part of something, without delving deeper or fully understanding it
例句
We've only scratched the surface of this problem; there's so much more to uncover.
典故来源
源自挖掘或刮擦表面的动作，比喻只触及表层而未深入内部。