v. be or form the base for
v. lie underneath
vt. 位于...之下, 成为...的基础
1. The symptoms of the illness may underlie a more serious condition.
这些疾病的症状可能隐藏着更严重的病情。
2. Trust and communication underlie a healthy relationship.
信任和沟通是健康关系的基础。
3. The principles of fairness and justice underlie the new law.
公平和正义的原则是新法律的基础。